Reports & Papers

In the lead-up to the nuclear security summit, Advancing Nuclear Security: Evaluating Progress and Setting New Goals outlines what was accomplished in a four-year effort launched in 2009 to secure nuclear material around the globe—and what remains to be done. The effort made significant progress, but some weapons-usable nuclear materials still remain “dangerously vulnerable." The authors highlight the continuing danger of nuclear and radiological terrorism and call for urgent action.

The Belfer Center’s Eben Harrell and Pulitzer Prize-winning author David E. Hoffman for the first time report the details of one of the largest nuclear security operations of the post-Cold War years — a  secret 17-year, $150 million operation to secure plutonium in the tunnels of Degelen Mountain.

On the eve of the Nuclear Security Summit in Seoul, South Korea, a new study finds that an international initiative to secure all vulnerable nuclear stockpiles within four years has reduced the dangers they pose.

Twenty years ago Russia and fourteen other newly-independent states emerged from the ruins of the Soviet empire, many as nations for the first time in history. As is typical in the aftermath of the collapse of an empire, this was followed by a period of chaos, confusion, and corruption. As the saying went at the time, “everything is for sale.” At that same moment, as the Soviet state imploded, 35,000 nuclear weapons remained at thousands of sites across a vast Eurasian landmass that stretched across eleven time zones. 

Today, fourteen of the fifteen successor states to the Soviet Union are nuclear weapons-free. This paper will address the question: how did this happen? Looking ahead, it will consider what clues we can extract from the success in denuclearizing fourteen post-Soviet states that can inform our non-proliferation and nuclear security efforts in the future. These clues may inform leaders of the U.S., Russia, and other responsible nations attending the Seoul Nuclear Security Summit on March 26-27, 2012. The paper will conclude with specific recommendations, some exceedingly ambitious that world leaders could follow to build on the Seoul summit’s achievements against nuclear terrorism in the period before the next summit in 2014. One of these would be to establish a Global Alliance Against Nuclear Terrorism.

When do states attack or consider attacking nuclear infrastructure in nonnuclear weapons states? Despite the importance of this question, relatively few scholarly articles have attempted to identify the factors that lead a state to attack another state's nuclear facilities. This paper conducts the first large-n analysis on when states use force as a way to control proliferation.

This paper challenges existing arguments that states are deterred from attacking nuclear programs by the prospect of a military retaliation from the proliferating state or concerns about international condemnation. Instead, it finds that states are more likely to attack nuclear programs when they believe that the proliferating state might use nuclear weapons or engage in other offensive behavior. States are willing to accept substantial costs in attacking if they believe that a particular country's acquisition of nuclear weapons poses a significant threat to their security.