U.S. President Barack Obama, second left, walks with Indonesian President Susilo Bambang Yudhoyono, center, his wife Kristiani, left, Japanese Prime Minister Yoshihiko Noda, third right, and South Korean President Lee Myung-bak, second right, to attend a gala dinner at ASEAN Summit in Nusa Dua, Bali, Indonesia, Friday, Nov. 18, 2011. (AP Photo/Dita Alangkara)