Lt. General Robert G. Gard, Jr., Chairman of the Center for Arms Control and Non-Proliferation, discusses the 'terrorists with nukes' rhetoric at the Nuclear Security Summit, unsecured fissile material in countries that are beyond the limited scope of Nunn-Lugar, the less-than-stellar security at many US and Russian nuclear sites and how getting the facts right on Iran’s nuclear program is difficult even for the well-informed.