Hillary Clinton, who is on her last presidential trip before she steps down as Secretary for State, told reporters the Asia tour had been "bittersweet".
She said: “It’s been great. It’s been bittersweet, nostalgic, all the things you would expect.”
US President Barack Obama has spent the day in Thailand at the start of a three-day tour of Southeast Asia.
Barack Obama is touring Southeast Asia to showcase foreign policy achievement and reinforce the U.S. role as a counterweight to China.