Preventing Nuclear Terrorism

We look at preparations the United States is taking to thwart a nuclear attack. NPR's Ira Flatow talks with Graham Allison, author of Nuclear Terrorism: The Ultimate Preventable Catastrophe.

Guest:

Graham Allison, author of Nuclear Terrorism: The Ultimate Preventable Catastrophe. Douglas Dillon professor of government. Director, Belfer Center for Science and International Affairs, John F. Kennedy School of Government, Harvard University.