U.S. President Obama waves before boarding Air Force One at Osan Air Base as he departs after attending the Nuclear Security Summit

 
U.S. President Obama waves before boarding Air Force One at Osan Air Base as he departs after attending the Nuclear Security Summit
U.S. President Barack Obama waves before boarding Air Force One at Osan Air Base, south of Seoul, as he departs after attending the Nuclear Security Summit, March 27, 2012. REUTERS/Yuriko Nakao (SOUTH KOREA - Tags: POLITICS MILITARY TRANSPORT)