Unprecedented United Nations Security Council sanctions have been levied on Iran and North Korea in an attempt to compel compliance with nonproliferation and international commitments. Are these sanctions working, and by what measures should we assess effectiveness? What type of sanctions—technology, oil, financial, luxury goods, individual travel, or other—can best achieve the desired results? What are the avenues or mechanisms through which sanctions are expected to “work?” How can we better translate economic impact into behavior changes? How can the humanitarian costs of sanctions be minimized? And if sanctions are not effective, what other tools should be used to address nonproliferation compliance?

Swedish Minister for Foreign Affairs Carl Bildt and Harvard University Professor Meghan O'Sullivan discuss the efficacy of sanctions on Iran and North Korea for nonproliferation. What would you like to ask Carl Bildt? Share your comments and questions below.