Abe wins Obama's backing on crucial issues

Apr 24, 2014, 12:11 PM EDT
TOKYO, JAPAN - APRIL 23: U.S. President Barack Obama is greeted by officials including US Ambassador to Japan, Caroline Kennedy after disembarking Air Force One upon arrival at Haneda Airport on April 23, 2014 in Tokyo, Japan. The U.S. President is on an Asian tour where he is due to visit Japan, South Korea, Malaysia and Philippines. Credit Jun Sato/Getty Images
Jun Sato/Getty Images

President Obama offered a security blanket to a staunch Asian ally on Thursday, declaring on a visit here that the United States was obligated by a defense treaty to protect Japan in its confrontation with China over islands in the East China Sea.