Sep 01,2013 National Commentaries South Korean Perspective Deterrence, NPT and the Two Koreas A South Korean View on Further Cuts in Nuclear Weapons In April 2009, during his visit to Prague, President Obama announced his plan for “a world without nuclear weapons.” Through a series of negotiations, the United States and Russia reached an agreement to reduce nuclear weapons to 1,550 each—the […] Choi Kang* Barack Obama , Berlin speech , Extended deterrence , Non-proliferation treaty , Nuclear weapons