US aircraft carrier will join a major anti-submarine naval exercise with South Korea next week in a show of strength to North Korea after the sinking of a warship, reports said Wednesday. South Korea, which accuses the North of torpedoing its ship Cheonan in March with the loss of 46 lives, is also mounting a diplomatic drive at the United Nations but indicated it would not seek new sanctions. The USS George Washington will leave its base in the Japanese port of Yokosuka around Saturday and arrive in the Yellow Sea early next week, Yonhap news agency quoted a military...