Obama delivers speech in S. Korea U.S. President Barack Obama delivers a speech during a visit to the Hankuk University of Foreign Studies...

Obama delivers speech in S. Korea

U.S. President Barack Obama delivers a speech during a visit to the Hankuk University of Foreign Studies in Seoul, South Korea, March 26, 2012.(Xinhua/Park Jin hee)

U.S. President Barack Obama delivers a speech during a visit to the Hankuk University of Foreign Studies in Seoul, South Korea, March 26, 2012.(Xinhua/Park Jin hee)

U.S. President Barack Obama delivers a speech during a visit to the Hankuk University of Foreign Studies in Seoul, South Korea, March 26, 2012.(Xinhua/Park Jin hee)

U.S. President Barack Obama delivers a speech during a visit to the Hankuk University of Foreign Studies in Seoul, South Korea, March 26, 2012.(Xinhua/Park Jin hee)

U.S. President Barack Obama delivers a speech during a visit to the Hankuk University of Foreign Studies in Seoul, South Korea, March 26, 2012.

Obama arrived in South Korea to attend the 2012 Seoul Nuclear Security Summit held on March 26 to 27.