U.S. President Barack Obama, right, and First Lady Michelle Obama await the arrival of Lee Myung-bak, president of South Korea, and Kim Yoon-ok, First Lady of South Korea, both unseen, at the North Portico of the White House before a state dinner in Washington, D.C., U.S., on Thursday, Oct. 13, 2011. Obama said the U.S. has an "unbreakable" alliance with South Korea as he welcomed the Asian nation's president for a state visit. Photographer: Joshua Roberts/Bloomberg via Getty Images
