Asan Plenum 2011: “Our Nuclear Future,” brought together 350 leading nuclear scientists, engineers, policy experts, and public intellectuals from around the world for a 3-day meeting. The Plenum focused on five major themes—nonproliferation, disarmament, peaceful use, nuclear security, and deterrence. With South Korea set to host the 2nd Nuclear Security Summit in March 2012, and with the Fukushima nuclear crisis in neighboring Japan as well as North Korea’s pursuit of nuclear weapons as the immediate backdrop, the Plenum initiated a much needed comprehensive reassessment of myriad issues which ahve crucial implications for our nuclear future.