Senate Democrats are working feverishly to ratify the START agreement on nuclear weapons hammered out between the Obama administration and Russia. Republicans are trying to change the deal in order to strengthen America’s missile defense posture and modernize our nuclear arsenal. So far, those efforts have been rejected. Are these badly needed changes or are Republicans just trying to kill this treaty by any means possible? Why do conservatives see this treaty as badly flawed? What kind of final vote can we expect? And how solid or weak is the Obama argument that this treaty is vital to verifying what Russia is and is not doing on the nuclear front? We ask former U.S. Ambassador to the United Nations John Bolton.