Obama visits Korean Demilitarised Zone for first time
25 March 2012 Last updated at 07:32 BST
US President Barack Obama has visited the Demilitarised Zone (DMZ) separating the two Koreas, amid rising tensions over the North's planned rocket launch.
He went to an observation post on the volatile border, and met US troops. He will hold talks in Seoul later.
Lucy Williamson reports on his first on his trip.