Look up! The ghosts of space weapons past have once again darkened our cosmic doorway. Recently Britain’s Financial Times reported that China flight-tested a new breed of space weapon when it launched a massive “Long March” rocket tipped with a nuclear-capable, hypersonic glider. The missile briefly entered orbit before descending on its target, which it missed by roughly two dozen miles. The report suggested that the test was evidence that China has “made astounding progress on hypersonic weapons and [is] far more advanced than US officials realised.”

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Editor’s note: In late September, the National Interest organized a symposium on nuclear policy, nonproliferation, and arms control under the Biden administration. A variety of scholars were asked the following question: “Should Joe Biden seize the opportunity of his administration’s Nuclear Posture Review to redefine the role of nuclear weapons in U.S. security planning? How should U.S. policy change to address the proliferation threats that the United States is facing?” The following article is one of their responses:

President Joe Biden should use the opportunity of the Nuclear Posture Review (NPR) to reduce the role of nuclear weapons in the United States’ security policy and support a forward-looking arms control approach while maintaining a safe, secure, and effective nuclear deterrent. He will have to make his views known if he wants the process to produce bold options for his consideration.

First, the NPR is the ideal place to consider the planned strategic modernization program. The Congressional Budget Office estimates the program’s cost over the next ten years at $634 billion.  Maintaining a safe, secure, and effective deterrent requires that certain programs proceed, including command and control updates, the Columbia-class ballistic missile submarine, the B-21 bomber, and the B61-12 bomb. However, some programs should be reconsidered. For example, while the United States should maintain a triad that includes an intercontinental ballistic missile (ICBM) leg, the NPR should assess whether it is necessary to deploy four hundred ICBMs. It should also take an unbiased look at whether some portion of the Minuteman III force could be life-extended, allowing the Defense Department to push out to the future the question of building an expensive new ICBM. 

Pursuing all of these strategic programs would entail significant opportunity costs as less money would be available for conventional forces such as Virginia-class attack submarines, conventionally-armed missiles, and fighter aircraft. That matters. The most likely path to a nuclear exchange between the United States and Russia or the United States and China is a conventional conflict that escalates into a nuclear conflict. American conventional military power that can deter conventional conflict with peer competitors in the first place will also greatly reduce the likelihood of nuclear conflict.  

Second, the NPR will provide the basis for Washington’s approach in possible negotiations with Russia regarding further reductions and limitations on nuclear arms. American officials have said that the Biden administration would seek a limit covering all American and Russian nuclear arms. The NPR should set a level for American negotiators. How about 2,500 total nuclear warheads, with a sub-limit of 1,000 deployed strategic warheads? That would require significant cuts by the United States and Russia but would still leave both with many more nuclear weapons than any other country. Such a reduction would position Washington and Moscow to effectively press China to moderate its nuclear plans. 

Moscow will likely not agree to any nuclear reduction, let alone a limit of 2,500, unless Washington addresses issues such as missile defense. With this in mind, decisions in the NPR should account for decisions regarding other non-nuclear weapon programs, and vice versa. 

Third, Biden has endorsed moving to a declaratory policy in which the sole purpose of the United States’ nuclear weapons would be to deter a nuclear attack on the United States or an ally or partner and, if necessary, retaliate for such an attack. Both Washington and Moscow now appear to believe the other is lowering the threshold for nuclear use. That should leave no one comfortable. Adopting a sole-purpose policy would signal a different approach from the United States. 

Critics of a sole-purpose policy argue that the ambiguity in America’s current declaratory policy means that the implicit threat of the first use of nuclear weapons can help deter a conventional attack. That is a serious point, but it is almost impossible to conceive of circumstances in which an American president would authorize first use, particularly against a nuclear-armed adversary that could strike back with its own nuclear arms. Moreover, given the effort that China and Russia are devoting to developing their conventional forces, Beijing and Moscow certainly seem to believe in the possibility of great power conventional conflict, regardless of the United States’ nuclear deterrent. 

The adoption of a sole-purpose policy will require consultation with allies who depend on the United States’ extended nuclear deterrent. Those consultations may prove difficult, but there are offsets (for example, American boots on the ground) that could replace a dubious threat of first use. 

Right-sizing the United States’ nuclear forces (in part to free up funds for conventional forces), shaping a proposal for significant reductions with Russia, and adopting a sole purpose policy offer outcomes that a forward-looking NPR could advance. The review should offer these as options for the president’s consideration. He can then decide how bold he wishes to be. 

Steven Pifer is a William J. Perry Fellow at Stanford’s Center for International Security and Cooperation.

Originally for The National Interest

What we know for sure is that North Korea can build the bomb because the tremors from deep inside the Punggye-ri nuclear test-site tunnels have been detected around the world six times. The most recent blast in September 2017 was more than 10 times the size of the Hiroshima and Nagasaki nuclear explosions. With these explosions, North Korea joined seven other countries known to have detonated nuclear devices.

Read the rest at Global Asia

Thirty years after the end of the Cold War, nuclear weapons pose a far greater threat to the safety and security of Americans than is reflected in our public discourse. While the United States must maintain a strong nuclear deterrent as an important tool of U.S. foreign and defense policy, an oversized global arsenal of nuclear weapons makes Americans equally unsafe. It is time to reinvigorate arms control discussions to seek reasonable reductions that will make us all more secure.

Too many nuclear weapons increase the risk of theft by terrorists or other nefarious actors, encourage more countries to develop nuclear arms, and raise the risk of nuclear war. Reasonable arms control measures, taken in conjunction with adversaries like Russia, make Americans safer by diminishing the large Russian nuclear arsenal, reinforcing norms against the development and use of nuclear arms, securing or eliminating nuclear material from theft or misuse by terrorists, and saving money that can be used to strengthen the United States military’s conventional deterrence against costly and destructive wars. 

In order to achieve those goals, Washington and Moscow have cut their strategic nuclear weapons since the height of the Cold War. Through the 2010 New Strategic Arms Reduction Treaty, or New START, which the U.S. and Russia recently extended, both countries each reduced their nuclear arsenals to no more than 1,550 deployed strategic warheads arming no more than 700 deployed strategic ballistic missiles and bombers.

Yet, despite these historic cuts, the United States and Russia each still have far more nuclear weapons than either side could conceivably use in a conflict, and at least ten times more weapons than any other country in the world. This actually makes Americans less safe, rather than the other way around.

In 2013, the Joint Chiefs of Staff concluded that the United States could safely reduce the number of deployed strategic warheads by one-third. The Biden administration should use that study—along with the current Nuclear Posture Review– to set the United States on the path to reasonable reductions. 

The Biden administration should aim for new negotiations between the United States and Russian to limit each country’s armed forces to 1,000 deployed strategic warheads. The agreement can be executed incrementally, and the sides might informally agree once negotiations began to deploy no more than 1,400 strategic warheads, as an early confidence-building measure. This first step is an easy and safe one to take, as there have been times over the past decade when both countries already deployed fewer than 1,400 strategic warheads.

As part of a bold new vision for arms control and strategic stability, U.S. negotiators should seek an agreement that encompasses all U.S. and Russian nuclear warheads, including reserve (non-deployed) strategic warheads, and non-strategic nuclear weapons. Negotiators should work to limit all nuclear warheads to no more than 2,500 each, with an embedded sub-limit of 1,000 deployed strategic warheads within the overall aggregate limit. Even with the dramatic arsenal reductions outlined here, the United States would maintain the ability to deter and, if necessary, defend against any global adversary.

Such a nuclear arms reduction agreement would have significant additional advantages for the United States:

First, it could position Washington and Moscow to press China to freeze or limit its build-up of nuclear arms as long as the United States and Russia are reducing their nuclear arsenals. 

Second, such an agreement could give the Pentagon additional resources to support wider force modernization requirements for nuclear and conventional forces alike, including new ballistic missile submarines and the B-21 bomber. If we have the forces to deter conventional conflict, we dramatically reduce the prospect of nuclear war.

Third, such an agreement would bolster America’s non-proliferation credentials and leadership. A new U.S.-Russia nuclear arms reductions treaty may not lead North Korea to abandon its nuclear program overnight, but it would increase the ability of U.S. diplomats to urge third countries to pressure and sanction outliers such as North Korea.

Right-sizing U.S. and global nuclear arsenals strengthens deterrence, reduces proliferation risks, and lowers the threat of nuclear war to the United States and our allies. The Biden administration has an opportunity to reduce that risk. It should seize it.

Rep. Ami Bera, D-Calif., is chairman of the House Foreign Affairs Subcommittee on Asia, the Pacific, Central Asia, and Nonproliferation. Steven Pifer is a William J. Perry Research Fellow at Stanford's Center for International Security and Cooperation.

Originally for Defense One