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During the past eight months of the global COVID pandemic, the Chinese People’s Liberation Army (PLA) has been active in promoting China’s claims in the South China Sea.  This essay evaluates PLA statements, military exercises and operations, and deployment of relevant platforms and weapons in the South China Sea during this period. I leverage Chinese-language sources in addition to my own operational knowledge from over a decade of military experience to provide greater context for these activities. I argue that the greatest change in the PLA’s role in the South China Sea has not been operational. Instead, the most interesting development has been the fact that the PLA has taken on a more significant signaling role. Specifically, the Chinese military seems to be purposefully using, and perhaps even exaggerating, its capabilities and activities to enhance deterrence against the United States. This may be seen as necessary as the US increases its own efforts to push back on China’s militarization of the South China Sea. In other words, the PLA has taken a more active role in China’s South China Sea strategy, but not necessarily a more aggressive one.

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This analysis by Oriana Skylar Mastro originally appeared in The Interpreter, by the Lowy Institute.


China’s strategy in responding to concerns about its intentions in the South China Sea is to claim that none of the activities, statements or behaviours that concern other countries are actually happening.

China claims it has not militarised the South China Sea, but that the United States “is the real pusher of militarisation” in these waters. Its leaders often argue that China is a peace-loving country only interested in defending itself. As the China’s General Wei Fenghe stated at the Shangri-La Dialogue in 2018, “China has never provoked a war or conflict, nor has it ever invaded another country or taken an inch of land from others. In the future, no matter how strong it becomes, China shall never threaten anyone.”

China has similarly brushed off concerns of other claimants, such as Vietnam, about its intensifying military exercises in the South China Sea and largely ignored Australia’s assertion at the United Nations that China’s claims have no legal backing.

So apparently it is all one big misunderstanding.

On 24 November, former Chinese ambassador Fu Ying criticised the United States in a New York Times op-ed for raising multiple issues that in her mind do not exist. Thus, the way to resolve the growing bilateral tensions is for the two countries “to have candid talks to better understand each other’s intentions and cultivate trust”.

So, in the Chinese communist spirit of 实事求是, or “seeking truth from facts”, I have charted the military capabilities China has deployed to the South China Sea, which are displayed with references on the map below. The Paracel Islands and the Spratly Islands are under dispute; Hainan Island is a recognised part of China, but I include it because the military capabilities in situ have implications for Chinese military options in the South China Sea writ large.

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Update on Taiwan and China's Troubled Relationship: Oriana Skylar Mastro on NPR

"The current threat is that the CCP is running out of patience, and their military is becoming more and more capable. So for the first time in its history, there's the option of taking Taiwan by force," Mastro tells NPR's Weekend Edition host Scott Simon.
Update on Taiwan and China's Troubled Relationship: Oriana Skylar Mastro on NPR
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Center Fellow Oriana Skylar Mastro Discusses How Her Scholarship and Military Career Impact One Another

An expert on Chinese military and security issues, Mastro also talks about how her learning style informs her teaching style.
Center Fellow Oriana Skylar Mastro Discusses How Her Scholarship and Military Career Impact One Another
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China’s official denials of growing military capability in the region look a lot like gaslighting.

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Brett McGurk, former presidential envoy for the global coalition to defeat ISIS, joins Andrea Mitchell to discuss the last minute foreign policy moves, including the decision to draw down the number of troops in Afghanistan, that President Trump is saddling the incoming Biden administration with.

Watch interview at MSNBC

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Brett McGurk, former presidential envoy for the global coalition to defeat ISIS, joins Andrea Mitchell to discuss the last minute foreign policy moves, including the decision to draw down the number of troops in Afghanistan, that President Trump is saddling the incoming Biden administration with.

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Special forces veteran and Stanford scholar Joseph Felter will never forget when U.S. Army General Stanley McChrystal was briefed on a study Felter had co-authored concluding that civilian casualties inflicted by international forces in Afghanistan increased insurgent violence.

McChrystal was gripped by one finding in particular in the analysis by Felter and his colleague, Radha Iyengar: If the International Security Assistance Force (ISAF) could eliminate incidents that left at least two civilians dead, then there would be one less insurgent attack over the following six weeks.

Read the rest at  Stanford News

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Joseph Felter underscores the importance of rigorous data and scholarship in understanding violent conflict and reducing casualties. He brought scholars into the field when he was deployed overseas and he draws on this experience to give his Stanford students a first-hand look into challenges facing the U.S. military.

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We are pleased to share that Oriana Skylar Mastro, FSI Center Fellow at APARC, has won the 2020 International Security Section of the American Political Science Association Best Book by an Untenured Faculty Member Award for her book The Costs of Conversation: Obstacles to Peace Talks in Wartime (Cornell University Press, 2019).

Each year, APSA recognizes excellence in the political science profession and its various subfields. Mastro has won the Association’s award for an untenured scholar who has published the highest quality book in Security Studies in the previous calendar year.

[To receive the latest updates on our scholars' research sign up for APARC’s newsletters]

Mastro is an international security expert with a focus on Chinese military and security policy issues, Asia-Pacific security, war termination, and coercive diplomacy. Her research addresses critical questions at the intersection of interstate conflict, great power relations, and the challenge of rising powers. In The Costs of Conversation, she argues that states are primarily concerned with the strategic costs of conversation, and these costs need to be low before combatants are willing to engage in direct talks with their enemy. She examines two factors leaders look to when determining the strategic costs of demonstrating a willingness to talk: the likelihood the enemy will interpret openness to diplomacy as a sign of weakness, and how the enemy may change its strategy in response to such an interpretation. A state will be open to talking with the enemy only if it thinks it has demonstrated adequate strength and resiliency to avoid the inference of weakness and if it believes that its enemy has limited capacity to escalate or intensify the war.

Mastro uses four primary case studies — North Vietnamese diplomatic decisions during the Vietnam War, those of China in the Korean War and Sino-Indian War, and Indian diplomatic decision making in the latter conflict — to demonstrate that the costly conversations thesis best explains the timing and nature of countries' approach to wartime talks, and therefore when peace talks begin. Her findings have significant theoretical and practical implications for war duration and termination, as well as for military strategy, diplomacy, and mediation.

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[left: image] Oriana Skylar Mastro, [right: text] Congratulations, Oriana Skylar Mastro, Recipient of the 2020 America in the World Consortium Prize for 'Best Policy Article' from Duke University, Johns Hopkins SAIS, and Texas University at Austin
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Oriana Skylar Mastro Awarded America in the World Consortium Prize for Best Policy Article

Mastro, who begins her role as FSI Center Fellow on August 1, has won the AWC Best Policy Article on U.S. Foreign Policy and Grand Strategy award for her insights on how China leverages ambiguity to gain global influence and what the United States can do to counter the PRC’s ambitions.
Oriana Skylar Mastro Awarded America in the World Consortium Prize for Best Policy Article
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Q&As

FSI’s Incoming Center Fellow Oriana Skylar Mastro Discusses Chinese Ambitions, Deteriorating U.S.-China Relations

Mastro, whose appointment as a Center Fellow at Shorenstein APARC begins on August 1, considers the worsening relations between the world’s two largest economies, analyzes Chinese maritime ambitions, and talks about her military career and new research projects.
FSI’s Incoming Center Fellow Oriana Skylar Mastro Discusses Chinese Ambitions, Deteriorating U.S.-China Relations
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The American Political Science Association recognizes Oriana Skylar Mastro for her work on military strategy and mediation.

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Arzan Tarapore is a Research Scholar whose research focuses on Indian military strategy and regional security issues in the Indo-Pacific. In academic year 2024-25, he is also a part-time Visiting Research Professor at the China Landpower Studies Center, at the U.S. Army War College. Prior to his scholarly career, he served for 13 years in the Australian Defence Department in various analytic, management, and liaison positions, including operational deployments and a diplomatic posting to the Australian Embassy in Washington, DC.

His academic work has been published in the Journal of Strategic Studies, International Affairs, The Washington Quarterly, Asia Policy, and Joint Force Quarterly, among others, and his policy commentary frequently appears on platforms such as Foreign Affairs, the Hindu, the Indian Express, The National Interest, the Lowy Institute's Interpreter, the Brookings Institution’s Lawfare, and War on the Rocks.

He previously held research and teaching positions at Georgetown University, the East-West Center in Washington, the Observer Research Foundation in New Delhi, and the RAND Corporation.

He earned a PhD in war studies from King's College London, an MSc from the London School of Economics, and a BA (Hons) from the University of New South Wales. Follow his commentary on Twitter @arzandc and his website at arzantarapore.com.

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Oriana Skylar Mastro is a Center Fellow at the Freeman Spogli Institute for International Studies and Courtesy Assistant Professor of Political Science at Stanford University, where her research focuses on Chinese military and security policy, Asia-Pacific security issues, war termination, and coercive diplomacy. She is also a nonresident scholar at the Carnegie Endowment for International Peace and a member of the Council on Foreign Relations. She was previously an assistant professor of security studies at Georgetown University. Mastro continues to serve in the United States Air Force Reserve, for which she currently works at the Pentagon as Deputy Director of Reserve Global China Strategy. For her contributions to U.S. strategy in Asia, she won the Individual Reservist of the Year Award in 2016 and 2022 (FGO).

She has published widely, including in International Security, Security Studies, Foreign Affairs, the Journal of Strategic Studies, The Washington Quarterly, the Economist, and the New York Times. Her most recent book, Upstart: How China Became a Great Power (Oxford University Press, 2024), evaluates China’s approach to competition. Her book, The Costs of Conversation: Obstacles to Peace Talks in Wartime (Cornell University Press, 2019), won the 2020 American Political Science Association International Security Section Best Book by an Untenured Faculty Member.

She holds a B.A. in East Asian Studies from Stanford University and an M.A. and Ph.D. in Politics from Princeton University.

Her publications and commentary can be found at orianaskylarmastro.com and on Twitter @osmastro.

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U.S.-China relations have been deteriorating at an alarming speed, and as distrust grows on both sides, it is unclear how to stop the downward spiral. What does China want and how can we best assess Chinese intentions?

This is a key question on the research agenda of East Asian security expert Oriana Skylar Mastro, FSI’s newest Center Fellow. Mastro, an assistant professor of security studies at Georgetown University’s Edmund A. Walsh School of Foreign Service, will begin her appointment at FSI on August 1 and be based at the Shorenstein Asia-Pacific Research Center (APARC), where she will continue her research on Chinese military and security policy, Asia-Pacific security issues, war termination, and coercive diplomacy. She will also work with the Center for International Security and Cooperation (CISAC), and teach students in both the CISAC Honors program and the Ford Dorsey Master’s in International Policy program.

Here, Mastro discusses Chinese ambitions and the rapidly increasing tensions in U.S.-China relations; talks about her military career and new research projects; shares how she first became interested in East Asian security issues as a Stanford undergraduate student; and even reveals some things we don’t know about her.

[To receive stories like this directly in your inbox sign up for APARC’s newsletters]


You have argued in your writings that although China does not want to usurp the United States’ position as the leader of the global order, its strategic goal in the Indo-Pacific region is nearly as consequential. Why is it so? What do you foresee for Chinese aims and the U.S.-China rivalry as we near the U.S. presidential election?

Mastro: My claim is that China doesn't want to replace the United States but rather displace the United States. It’s an important distinction because it’s become popular to assume that China wants to have everything that we, the United States, have and that its view of power is the same as ours. But if you look throughout history, every time a country rises, it exercises its power differently. The United States, for example, didn't build colonies because Great Britain had had colonies. It is equally unlikely to assume that China is going to build a global military and engage in foreign military interventions.

We make assumptions about what China wants and how it will get there based on our own experiences, and those tend to be incorrect.
Oriana Skylar Mastro

Therefore, I argue that China doesn't want to dominate the world. This doesn’t mean that its ambitions are limited, but rather that it thinks that the U.S. in-depth global involvement is an ineffective and costly way of doing business. Outside of Asia, China relies mainly on political and economic influence to ensure that no one goes against its interests. It is only in Asia where China’s military goals are problematic for the United States and where it wants to dominate and see the U.S. military less active. Again, this isn't due to lack of ambition: from China’s viewpoint, whoever dominates Asia, the world’s most dynamic and economically important region, is a superpower, just like whoever dominated Europe during the Cold War would have been a superpower. In short, I think we make assumptions about what China wants and how it will get there based on our own experiences, and those tend to be incorrect.

As for what’s ahead for the U.S.-China relationship and the coming presidential election, I think it’s a misconception to interpret the frictions between the two countries as stemming from the Trump administration. There are aspects of Chinese behavior that both the Republican and Democratic parties find problematic and I believe we will see a tougher policy towards China, regardless of who wins the election. A Democratic president might be less willing to risk confrontation with the Chinese the way the Trump administration is, but either way, I see increased tensions between the two sides as the norm for the next several years.

In your recent testimony on China’s maritime ambitions before the House Committee on Foreign Affairs, you distinguish between China's aims in its near seas and far seas. How do these intentions differ and why is it important to make the distinction between them?

Mastro: In the near seas — the South China Sea (SCS) and the East China Sea (ECS) — China is concerned with sovereignty, which is absolute control of these waters, and with regional hegemony. In the far seas — the Indian Ocean and beyond — China aims to operate, but it doesn’t aspire to exclude others from doing so. In these waters, China's ambitions are driven primarily by the desire to protect its strategic lines of communication and its economic and political interests.

While China's objectives in the South China Sea and East China Sea are detrimental to U.S. interests, some aspects of its objectives in the Indian Ocean and beyond are legitimate and do not necessarily threaten U.S. interests, although they are not without risks.
Oriana Skylar Mastro

It’s important to make this distinction for strategy reasons, which goes right to my previous point. There’s a growing sense now that “whatever China does is bad and the United States needs to counter everything China does,” but that's not quite true. While China's objectives in the SCS and ECS are detrimental to U.S. interests, some aspects of its objectives in the Indian Ocean and beyond are legitimate and do not necessarily threaten U.S. interests, although they are not without risks.

U.S. policy needs to consider these differences in the degree of threat because prioritization is crucial for strategy. If we are to prioritize our strategies, then we should prioritize countering China’s ambitions in its near seas and try to shape its objectives in the far seas, perhaps through more cooperative policies. Perceiving everything that China does as bad isn’t the right approach to competing with it.

In addition to your academic career, you have an extensive military portfolio: for over ten years, you have served in the United States Air Force Reserve. You have just been awarded the Meritorious Service Medal. Tell us more about this award, how your academic and military careers influence each other, and what it’s like to balance the two.

Mastro: I'm a special type of reservist called Individual Mobilization Augmentee (IMA), which means that I have a custom duty schedule and work with my active-duty supervisors to help meet mission requirements of whatever the priority is at the time. The award I just received, the Meritorious Service Medal, which is a recognition of commendable noncombatant service, is for my last role as a senior China analyst at the Pentagon. My main duties in that role were to prepare intel products and brief the senior leadership of Headquarters Air Force at the Pentagon.

I think that the mix of my two careers makes me a better military officer and a better scholar. My experiences in the military inspire a lot of my research projects, oftentimes regarding questions that I don't have good answers for. As an officer, I need the power of argumentation on my side if I am to make a difference. After I engage in the good academic practice of spending a year or more researching something in-depth, I can then go back and provide inputs into the Department of Defense. There is a synergy between the two careers in terms of topics.

Moreover, my experiences in the military have taught me leadership and teamwork skills that we don’t necessarily learn from being professors. There’s a vast difference in leadership and teamwork dynamics between the military and academia. When I’m on active duty, I'm there as Major Mastro to provide my expertise but also be a strong part of a team with a chain of command.

Of course, managing both civilian and military careers demands considerable planning and balancing. I schedule my deployments around my teaching schedule, but sometimes there are urgent assignments given current world events. For example, last semester, I was on duty one day a week while teaching full time. So that requires planning and flexibility on the part of my family, as well as support from the people who employ me.

How did you first become interested in China and East Asian security issues, and what made you pursue a military career?

Mastro: This is a fun topic to talk about at Stanford because it's all thanks to my experiences as an undergraduate student on The Farm. As a freshman, I began learning Chinese, and in the following years, being humanities- and arts-focused, I mainly studied ancient China and Chinese literature. When I returned to campus after a year of intensive study in China, I was looking for a research opportunity and heard about the CISAC Honors Program in International Security Studies. So it was only in my senior year that I took my first course in political science and was exposed to international security studies. I discovered a passion for this topic like nothing else I had studied before. I wanted to learn more and got my first job, at the Carnegie Endowment, researching security issues, and then decided to continue with graduate studies.

During my Ph.D. at Princeton, I met a General in the Air Force who told me I should join the military. At that point, I'd never met anyone in the military. I thought, “I’m not very tough; what could I possibly contribute?” But I took up on his suggestion to do an internship with the U.S. Indo-Pacific Command and realized that my Chinese language skills and knowledge about China could be useful. I wanted to serve and planned to do my duty for four years and be done, yet here we are, nearly 11 years later. It’s been a blessing to make a whole career out of this and it’s truly all thanks to many memorable experiences at Stanford and the CISAC Honors Program. I’m thrilled to be back and looking forward to teaching and mentoring students in the Honors program and the Ford Dorsey Master’s in International Policy program.

What are some of your current research projects and what do you plan to work on at APARC and Stanford at large?

Mastro: My main project is researching a book about what China wants – a framework for understanding how to assess Chinese intentions. This is a policy-relevant book that engages with international relations theory and literature, where understanding state intentions plays a key role. The framework I’m developing assesses information to answer what China’s intentions are in several areas and regarding several cases. There will be chapters on China’s regional ambitions, global ambitions, approach to international institutions, and intentions towards the economic and technological order. As part of this project, you may see me currently publishing works on the South China Sea or the Indian Ocean.

China doesn't have any alliances, but that doesn't mean it isn’t aligned or working with other countries.
Oriana Skylar Mastro

Another project, in its beginning stages, focuses on the China-Russia relationship. Here the overarching framework is an attempt to understand state cooperation. This relates to alliances, though the notion of alliances is rather outdated. China doesn't have any alliances, but that doesn't mean it isn’t aligned or working with other countries. The question is what types of cooperation between China and Russia are problematic for the United States and what types are not. Again, we need to prioritize: is it so bad if China and Russia back each other in the UN, or is it worse that they exercise together? I don't know yet, but I think that international relations theory can shed some light on these questions.

Tell us something we don’t know about you.

Mastro: It may seem that I constantly work because I have a military career in addition to being very involved in the policy and academic worlds, but many people don't realize that I'm a big fan of leisure. I spend plenty of time with my children and have multiple hobbies that I engage in daily: I read novels, do yoga and CrossFit, play the piano, and manage to sleep! I was a very serious pianist and still take Skype lessons with my old teacher back in Chicago. Now with the move to California, I’ll finally be able to enjoy the grand piano my parents bought me for my 16th birthday, which I never had room for. I'm a firm believer in work-life balance. It's just that my work, too, is a passion and a hobby of mine.

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Mastro, whose appointment as a Center Fellow at Shorenstein APARC begins on August 1, considers the worsening relations between the world’s two largest economies, analyzes Chinese maritime ambitions, and talks about her military career and new research projects.

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President Trump’s newly named envoy for arms control, Marshall Billingslea, gave a lengthy interview last week on the administration’s approach to nuclear arms negotiations. He stressed bringing in China, struck a pessimistic note about the sole treaty constraining Russian and U.S. nuclear forces, and offered no ideas for getting Moscow to discuss non-strategic nuclear arms.

Unfortunately, the interview reinforces the view that the Trump administration is unlikely to achieve a nuclear deal…or even develop a serious proposal.

Read full article at Defense One

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Officials in Moscow and Beijing will read Mr. Billingslea’s interview and see nothing to give them reason to negotiate.

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The Trump administration’s proposal for trilateral arms control negotiations appears to be gaining little traction in Moscow and Beijing, and the era of traditional nuclear arms control may be coming to an end just as new challenges emerge. This is not to say that arms control should be an end in it itself. It provides a tool that, along with the right combination of deterrence and defense forces and proper doctrine, can enhance U.S. and allied security and promote stability.

Applying that tool will require overcoming a variety of challenges, not just regarding nuclear weapons but related issues, such as missile defense and conventional strike systems. Policymakers face some hard choices.

NUCLEAR ARMS

In August 2019, the United States withdrew from the 1987 Intermediate-range Nuclear Forces (INF) Treaty following Russia’s violation. (More broadly, Moscow’s selective compliance with arms control agreements poses a problem.) The 2010 New Strategic Arms Reduction Treaty (New START) remains as the sole agreement constraining U.S. and Russian nuclear weapons. New START expires in February 2021, but can be extended for up to five years.

For the United States, New START extension should be a no-brainer. Russia is in compliance with the treaty. Extension would continue limits on Russian strategic forces, as well as the flow of information on those forces provided by the treaty’s verification measures, until 2026. Extension would not require that the Pentagon change its strategic modernization plans, as those plans were designed to fit within New START’s limits.

Moscow has offered to extend New START, but the Trump administration has been reluctant. In 2017, U.S. officials said that, before considering the extension issue, they wanted to: 1) see if Russia met the New START limits, which took full effect in February 2018, and 2) complete the nuclear posture review, which was released the same month. Two years later, however, the administration still lacks a position on extension.

Instead, President Trump has set an unachievable objective — a trilateral negotiation with China and Russia covering all their nuclear arms. As I recently wrote in more detail, Chinese officials have repeatedly said no to such a negotiation, citing the large difference in nuclear weapons levels. The Trump administration thus far has offered nothing to entice Beijing to change its position.

Moreover, almost a year after the president set his goal, his administration has yet to offer a proposal — or even an outline — for what such a negotiation would seek to achieve. Neither Washington nor Moscow is ready to agree to have the same number of nuclear weapons as China, but it is unrealistic to think that Beijing would accept unequal limits.

Setting aside China, Russia is not ready to discuss all nuclear arms unless certain conditions are met (more on that below). The Obama administration sought a new negotiation after New START’s conclusion with the goal of including all U.S. and Russian nuclear weapons. That idea never gained traction in Moscow.

If New START expires in 2021, the United States and Russia likely would not launch major new build-ups, as both face real defense budget constraints. But their deployed strategic warhead levels could “creep up” above the number allowed by New START if the sides add warheads to intercontinental ballistic missiles (ICBMs) and/or submarine-launched ballistic missiles (SLBMs) that currently carry fewer warheads than their capacity. With the demise of New START’s verification regime, the sides would have little visibility into the other’s actions regarding adding warheads or total warhead numbers.

Some appear to believe that holding back on agreeing to the extension of New START and/or starting from scratch in a new negotiation might increase U.S. leverage to include all nuclear arms, including non-strategic nuclear weapons. That does not appear to be the case. It is more likely that the end of New START’s constraints on deployed strategic weapons would make bringing non-strategic or non-deployed nuclear weapons under control more difficult.

MISSILE DEFENSE

Russian conditions for discussing a broader agreement focus first on missile defense. Differences over missile defense pose a challenge for arms control.

Current U.S. missile defenses hardly constitute a threat to Russian ICBM and SLBM warhead numbers. Moscow, however, has long seemed to fear the potential of U.S. technology and prospective missile defenses. The United States and Russia came close in spring 2011 to an arrangement on a cooperative missile defense for Europe, but they failed to reach agreement, after which the Russian position on limiting missile defenses hardened. Moscow showed no interest in a 2013 U.S. proposal for an executive agreement on missile defense transparency, under which the sides would have exchanged information each year on their current missile defense numbers and prospective numbers looking out each year for 10 years.

Moscow appears to want legally-binding limits on missile defenses. However, the Trump administration’s 2019 missile defense posture review stressed that there should be no negotiated limits on missile defense. Missile defense has a strong constituency in the U.S. Senate, impeding the chance that a treaty limiting missile defenses would get the necessary two-thirds approval.

The missile defense issue will become more complex in coming years. As part of its ground-based mid-course defense, the U.S. military maintains 44 ground-based interceptors in Alaska and California capable of intercepting strategic ballistic missile warheads, with another 20 interceptors planned. In a separate program, the Pentagon is now developing a new variant of the SM-3 missile interceptor. Whereas current variants (the SM-3 IA and SM-3 IB) can engage intermediate-range ballistic missile warheads, the Pentagon intends to test the new SM-3 IIA variant against an ICBM warhead.

If the SM-3 IIA proves capable of intercepting strategic ballistic missile warheads, that will raise concern in Moscow (and Beijing) about the proliferation of those interceptors on U.S. warships, at Aegis Ashore sites in Romania and Poland, and elsewhere. Russia’s interest in limits on missile defenses would only intensify as would Moscow’s linkage of future nuclear arms reduction negotiations to a negotiation on missile defense.

LONG-RANGE PRECISION-GUIDED CONVENTIONAL STRIKE

Sea-launched cruise missiles (SLCMs) and air-launched cruise missiles (ALCMs) carrying conventional warheads have never been constrained by arms control agreements. As their precision has increased, Russian officials and experts have expressed concern that they could destroy targets that previously would have required a nuclear weapon and that the United States might consider a “conventional strategic” attack on Russia. It is unclear how realistic this concern is; would, for example, a conventionally-armed U.S. SLCM warhead be powerful enough to disable a hardened Russian ICBM silo?

Russian officials in 2011 began linking long-range precision-guided conventional strike systems to the issue of further nuclear arms cuts. The Pentagon has shown little enthusiasm for limits on these conventional systems, which are a key component of U.S. power projection capabilities. Russia may be starting to catch up, having demonstrated conventionally-armed ALCMs and SLCMs in Syria, but the U.S. military holds a significant numerical advantage.

As with missile defense, the situation with conventional strike may become even more complex. With the demise of the INF Treaty, the Pentagon is now developing or planning several conventionally-armed ground-launched missiles that would have been prohibited by the treaty. Two missiles — the Precision Strike Missile with a possible range of 700 kilometers and a ground-launched cruise missile with a range of 1,000 kilometers — almost certainly are being developed with European contingencies in mind. The Pentagon’s planned ballistic missile with a range of 3,000-4,000 kilometers is intended for the Asia-Pacific region, primarily as a counter to the large number of Chinese intermediate-range missiles (most of which are believed to be conventionally-armed).

Developing and deploying these U.S. missiles — along with Russia’s continued deployment of the 9M729 intermediate-range ground-launched cruise missile plus other missiles that Russia may develop and deploy as “counters” to new U.S. missiles — would further complicate the long-range precision-guide conventional strike picture. That, if in turn linked to nuclear arms control, would impede negotiation of a new agreement reducing and limiting nuclear weapons.

HYPERSONIC, CYBER, AND SPACE

Hypersonic weapons pose another complex factor for arms controllers. Both the United States and Russia (as well as China) are developing hypersonic weapons, including hypersonic glide vehicles to mount on ballistic missiles and hypersonic cruise missiles. Russia has deployed a small number of Avangard hypersonic glide vehicles atop ICBMs to enhance their ability to overcome U.S. missile defenses. Those fall under New START’s limits, but future hypersonic weapons, such as Russia’s Kinzhal air-launched ballistic missile, do not.

A negotiation to limit nuclear arms or long-range precision-guided conventional strike systems would have to take account of hypersonic weapons. That could be difficult, as the United States, Russia, and China appear to be focusing on different types of hypersonic systems.

Cyber and space domains can also have important effects on the nuclear arms relationship. Cyber raises concern about the possibility that a side’s nuclear command, control, and communication systems might be compromised in ways that would allow an intruder either to disrupt communications, including an authorized launch order, or to spoof the system with an unauthorized instruction. The cyber domain does not lend itself readily to traditional arms control-type arrangements.

As for space, Moscow has long advanced proposals to ban the weaponization or militarization of space. Washington has resisted those proposals, in part out of concern that they might affect the ability of the U.S. military to operate space-based assets for command and control, early warning, and intelligence, surveillance, and reconnaissance purposes. It is unclear whether more limited proposals, such as a ban on anti-satellite tests that generate orbital debris or a ban on deploying strike weapons in space, might be negotiable.

DIFFICULT TRADE-OFFS

Traditional nuclear arms control is in trouble. If the United States and Russia — and perhaps other countries in the future — wish to continue to use it as a tool to promote a more stable, secure, and transparent nuclear relationship, they will have to deal with challenges that did not arise or that they could agree to set aside during past negotiations.

Washington faces a fundamental choice: Is it prepared to countenance some constraints on missile defense and possibly long-range precision-guided conventional strike systems in order to get Russia to agree to further reduce and limit nuclear arms, including non-strategic nuclear weapons? Moscow faces something of the reverse choice: Will it hold to its insistence on limiting missile defenses and conventional strike systems even if that blocks a future nuclear arms agreement with the United States?

There remains the question of China, and Russia almost certainly would seek to include Britain and France. Would those third countries be willing to consider an approach other than a full negotiation with the United States and Russia, perhaps by offering a degree of transparency regarding their nuclear forces and committing unilaterally not to increase their nuclear weapons numbers so long as U.S. and Russian nuclear forces were reducing?

It would make sense for U.S. and Russian officials to conduct regular, intense bilateral strategic stability talks on the full range of issues — nuclear arms, missile defense, conventional strike systems, hypersonic weapons, third-country nuclear forces, cyber, and space — and their various interactions. Such discussions, if they go beyond mere recital of talking points, might allay some concerns the sides hold about the other while helping U.S. and Russian officials to decide whether specific negotiations might make sense.

None of these questions will be easy, and sorting them out will take time. That bolsters the already strong argument for extending New START. Doing so would give Washington and Moscow five more years to figure out what role, if any, arms control should play in managing their nuclear relationship with one another and, perhaps, with third countries.

 

Originally for Brookings

 

 

 

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