This paper discusses three questions:

1. Could terrorists or others steal nuclear fuel from research rectors, to make either a nuclear weapon or a "dirty bomb," a radiological dispersal device?
2. Could terrorists attack a research reactor with conventional explosives, for example with a truck loaded with such explosives, in order to disperse radioactivity from the fuel of the reactor to an area downwind of the reactor?
3. How do power reactors compare with research reactors as targets of terrorist attacks?

The answer to the first two questions is a qualified yes. In the comparison called for in the third question, the low-enriched uranium in power reactors is unsuitable for making nuclear weapons, without major reprocessing. However, the highly enriched uranium burned in many research reactors around the world is suitable for making nuclear weapons, if enough of it is available. Both power reactors and research reactors could be targets for terrorists trying to attack a reactor with a truck bomb, for the purpose of dispersing radioactive material, or trying to steal such material for the purpose of making a dirty bomb. The variations from reactor to reactor, in both attractiveness to terrorists and protection of the facility, are widespread.

The third volume of The Cambridge History of Russia provides an authoritative political, intellectual, social and cultural history of the trials and triumphs of Russia and the Soviet Union during the twentieth century. It encompasses not only the ethnically Russian part of the country but also the non-Russian peoples of the tsarist and Soviet multinational states and of the post-Soviet republics. Beginning with the revolutions of the early twentieth century, chapters move through the 1920s to the Stalinist 1930s, World War II, the post-Stalin years and the decline and collapse of the USSR. The contributors attempt to go beyond the divisions that marred the historiography of the USSR during the Cold War to look for new syntheses and understandings. The volume is also the first major undertaking by historians and political scientists to use the new primary and archival sources that have become available since the break-up of the USSR.

This is a presentation made at the 2002 American Nuclear Society Winter Meeting in Washington, DC on November 19, 2002.

The presentation explores:

• Motivations for Past Terrorist Threats

• Motivation for New Terrorist Threats that are More Threatening
  

• Impact

• Threats Considered Feasible

Fifty years ago this month, President Dwight D. Eisenhower gave his "Atoms for Peace" address to the UN General Assembly. He proposed to share nuclear materials and information for peaceful purposes with other countries through a new international agency. That speech led to negotiations which, several years later, created the International Atomic Energy Agency (IAEA). In the nuclear Non-Proliferation Treaty (NPT) of 1968, the IAEA gained authority for policing the nuclear activities of member countries to ensure that those without nuclear weapons did not acquire them. The worldwide treaty bans all members except the United Kingdom, China, France, Russia, and the United States from having nuclear weapons and commits those five states to eventually eliminating their atomic arsenals. The treaty provides the norm and the foundation for an international regime to prevent the spread of nuclear weapons around the world. Yet, many believe that the NPT regime is battered and in need of strengthening. Given the more difficult nonproliferation and security challenges of today, it is vital that U.S. leadership be used to strengthen, not to weaken or abandon, the nuclear nonproliferation regime.