At the 35th G8 summit in July 2009, world leaders announced their support of the Obama-Medvedev commitment to eliminate all nuclear weapons and called on all countries to "undertake further steps in nuclear disarmament." Global Zero leaders believe the international consensus for the elimination of nuclear weapons is reaching a critical mass, especially given the declarations of political leaders during the special U.N. Security Council session on proliferation and disarmament convened by President Obama (September 24, 2009). President Obama received the 2009 Nobel Peace Prize in acknowledgment to his efforts for nuclear disarmament.