Ling Jihua, left, looked on in March 2010 as Chinese President Hu Jintao, signed a document at the closing ceremony of the National People's Congress in Beijing. Ling has been shifted to a lesser position. Andy Wong/AP hide caption

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President Obama (right) Chinese President Hu Jintao (center) and first lady Michelle Obama arrive for the State Dinner at the White House in Washington, DC, on Wednesday (Jan. 19, 2011). Mandel Ngan/AFP/Getty Images hide caption

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The U.S. and Japan are conducting joint exercises in the Sea of Japan, near the coast of South Korea. Here, the USS John McCain (L) pulls alongside the USS George Washington in the Sea of Japan. MC3 David Juan Pinalez /AFP/Getty Images hide caption

itoggle caption MC3 David Juan Pinalez /AFP/Getty Images