U.S. President Barack Obama delivers a speech during a rally with troops at Osan Air Base in South Korea November 19, 2009. Obama and South Korean President Lee Myung-bak called on North Korea on Thursday to return to stalled nuclear talks and end its atomic ambitions in return for massive economic aid. Reuters Pictures logo Reuters Pictures 27 months ago

U.S. President Barack Obama delivers a speech during a rally with troops at Osan Air Base in South Korea November 19, 2009. Obama and South Korean President Lee Myung-bak called on North Korea on Thursday to return to stalled nuclear talks and end its atomic ambitions in return for massive economic aid.