terrorism

The use of nuclear weapons in an urban area, particularly by a terrorist group, remains a palpable threat for many in a post-9/11 world. As populations congregate in ever-larger cities around the globe, scientists are seeking to measure all the likely physical impacts of such an attack on these dense clusters.

Despite international efforts to safeguard nuclear materials, the possibility of nuclear terrorism continues to be a concern for both policymakers and the public at large. In recent years, the threat has seemed acute enough to prompt contingency planning in the United States for the immediate aftermath of such an event should it occur.

As the United States commemorates the 10th anniversary of the 9/11 terrorist attacks, questions about what the nation and world have learned over this decade and the true scope of the consequences are front and center.