Nuclear Issues

Nuclear security around the world has improved dramatically over the last three decades—which demonstrates that with focused leadership, major progress is possible. But important weaknesses remain, and the evolution of the threat remains unpredictable. The danger that terrorists could get and use a nuclear bomb, or sabotage a major nuclear facility, or spread dangerous radioactive material in a “dirty bomb,” remains too high. The United States and countries around the world need to join together and provide the leadership and resources needed to put global nuclear security on a sustained path of continuous improvement, in the never-ending search for excellence in performance.

Cooperation between U.S. and Russian nuclear scientists and engineers represents an important opportunity for rebuilding U.S.-Russian relations. The United States and Russia possess more than 90 percent of the world’s nuclear weapons, the world’s largest stocks of weapons-usable nuclear material, and the world’s largest nuclear complexes, giving them a special responsibility for nuclear security and preventing nuclear terrorism.

In this Project on Managing the Atom Discussion Paper, Philipp C. Bleek chronicles nuclear weapons proliferation choices throughout the nuclear age. Since the late 1930s and early 1940s, some thirty-one countries are known to have at least explored the possibility of establishing a nuclear weapons program. Seventeen of those countries launched weapons programs, and ten acquired deliverable nuclear weapons.

A sampling of articles in the Spring 2016 issue of the Belfer Center's journal International Security.

International Security is America’s leading journal of security affairs. 
IS was ranked first in impact factor for 2014 among 85 journals of international relations in the annual “Journal Citation Reports”® released by Thomson Reuters. International Security’s 2014 Impact Factor is the highest of any international relations journals.

Russia once again dominates headlines, but U.S. expertise on the country is in demonstrable decline. With the launch of its new website, Russia Matters hopes to bring clarity to U.S. citizens following Russia-related news.

With the successful implementation of the historic nuclear agreement between Iran and the P5+1, a new chapter has opened between Iran and the international community, including the United States. Nevertheless, the future path of bilateral relations between the United States and Iran is uncertain and many challenges exist as the two countries attempt to formulate new terms of engagement. What should U.S. policy be towards Iran after the nuclear agreement? Can the agree­ment open the door to effective collaboration on areas of mutual interest, especially given the rising security challenges and rapidly changing dynamics of the Middle East? Or, will strategic rivalries between Iran and the United States con­tinue to shape and impede cooperation?

In this new report, Preventing Nuclear Terrorism: Continuous Improvement or Dangerous Decline?, Matthew Bunn, Martin Malin, Nickolas Roth, and William Tobey provide a global reality check on nuclear security. They note that effective and sustainable nuclear security capable of addressing plausible threats is the single most effective chokepoint preventing terrorists from acquiring a nuclear weapon.