U.S. President Obama speaks during a meeting with Russian President Dmitry Medvedev before the 2012 Nuclear Security Summit in Seoul

 
U.S. President Obama speaks during a meeting with Russian President Dmitry Medvedev before the 2012 Nuclear Security Summit in Seoul
U.S. President Barack Obama speaks during a meeting with Russian President Dmitry Medvedev before the 2012 Nuclear Security Summit in Seoul March 26, 2012. REUTERS/Larry Downing (SOUTH KOREA - Tags: POLITICS MILITARY)