David Krieger By this Author Jan 09, 2010 The Nobel War Lecture Aug 05, 2009 The Hiroshima challenge Jul 07, 2009 From Moscow, disappointing results on disarmament May 28, 2009 North Korea's nuclear test message Apr 07, 2009 Obama disarmament speech 'a world changing moment' Mar 31, 2009 Medvedev, Obama can change global nuclear policy Mar 05, 2009 On nuclear weapons, 'silence is indefensible' Dec 08, 2008 Letter to Obama: 'End Nuclear Weapons Era'