Former South Korean Lee Myung-bak, left, speaks with Italian Prime Minister Silvio Berlusconi before the dedication of the George W. Bush Presidential Center Thursday, April 25, 2013, in Dallas. (AP Photo/David J. Phillip)
South Korean President Lee Myung-bak exits from a voting booth to cast his ballot in South Korea's presidential election at a polling station in Seoul on Wednesday, Dec. 19, 2012. South Koreans bundled in thick mufflers and parkas braved frigid weather to choose between the liberal son of North Korean refugees and the conservative daughter of a late dictator. For all their differences, the presidential candidates hold similar views on the need to engage with Pyongyang and other issues. (AP Photo/Ahn Young-joon, Pool)
South Korean President Lee Myung-bak (left), Chinese Premier Wen Jiabao (center) and Japanese Prime Minister Yoshihiko Noda pose for photographs ahead of the fifth trilateral summit among the three nations in Beijing on Sunday, May 13, 2012. (AP Photo/Petar Kujundzic, Pool)
South Korean President Lee Myung-bak (left), Chinese Premier Wen Jiabao (center) and Japanese Prime Minister Yoshihiko Noda pose for photographs ahead of the fifth trilateral summit among the three nations in Beijing on Sunday, May 13, 2012. (AP Photo/Petar Kujundzic, Pool)
North Korean soldiers in Kim Il-sung Square in central Pyongyang, North Korea, chant during a rally denouncing South Korean President Lee Myung-bak on Friday, April 20, 2012. (AP Photo/Ng Han Guan)
North Korean soldiers in Kim Il-sung Square in central Pyongyang, North Korea, chant during a rally denouncing South Korean President Lee Myung-bak on Friday, April 20, 2012. (AP Photo/Ng Han Guan)
President Obama talks of reunification with North Korea during his visit to South Korea. President Lee Myung-bak is on hand. (Associated Press)
President Obama waves after being greeted by South Korean President Lee Myung-bak at the Blue House, the official presidential house, in Seoul on Sunday, March 25, 2012. (AP Photo/Susan Walsh)
President Obama. with South Korean President Lee Myung-bak, is in Seoul with other world leaders to discuss measures to safeguard atomic facilities and materials. South Korean Foreign Minister Kim Sung-hwan said he hopes "concrete steps" will be taken during the summit, which opens Monday. (Associated Press)
