What if the 'Dragonfire Bomb' Detonated in Times Square?

What if the 'Dragonfire Bomb' Detonated in Times Square?<br />Chautauqua Institution - Chautauqua Amphitheater<br />Graham Allison is Director of the Belfer Center for Science and International Affairs and Douglas Dillon Professor of Government at Harvard's John F. Kennedy School of Government. He's the author of Nuclear Terrorism: The Ultimate Preventable Catastrophe.