** FILE ** The nuclear-powered aircraft carrier USS George Washington leads South Korean warships during joint military drills in the East Sea/Sea of Japan on Monday, July 26, 2010. (AP Photo/Yonhap, Lee Jung-joon)

Photo by: Lee Jung-hoon

** FILE ** The nuclear-powered aircraft carrier USS George Washington leads South Korean warships during joint military drills in the East Sea/Sea of Japan on Monday, July 26, 2010. (AP Photo/Yonhap, Lee Jung-joon)