For over half a century, every U.S. president has made nuclear nonproliferation a chief foreign policy objective. President Trump has called the Iran accord “a disastrous deal,” and has promised to dismantle it, while North Korea continues to pursue a larger, more sophisticated nuclear arsenal. Is the Iran nuclear deal “good” for the U.S.? What should American policy be toward North Korea? And what is the likelihood of terrorists building or obtaining a nuclear weapon?
**Dr. Gary Samore**, Executive Director for Research at Harvard University’s Belfer Center for Science and International Affairs. He is also a non-resident Senior Fellow at the Brookings Institution. Most recently, he served as President Obama’s White House Coordinator for Arms Control and Weapons of Mass Destruction.