President Obama speaks at a joint news conference with Japan's Prime Minister Shinzo Abe in Tokyo on Thursday. Obama reinforced the U.S.-Japan security commitment.
Concerns over China's air defense claims led Secretary of Defense Chuck Hagel to call Japan's defense minister Wednesday. Here, a man makes a call near a replica of a Chinese fighter jet displayed in Beijing Wednesday.
Ng Han Guan/AP
Two U.S. B-52s, like the one shown here, have flown through an area that China says is within its air defense zone. China's announcement has irked its neighbors and the U.S. and Japan say they won't abide by it.
Andy Rain /EPA/Landov