TOKYO (Reuters) - U.S. President Barack Obama arrives in a tense Asian region on Wednesday, faced with the delicate task of assuring Japan and other regional allies of America's commitment to their defence without hurting Washington's vital ties with a rising China.
That difficult diplomatic balancing act was highlighted on Monday, when Japanese Prime Minister Shinzo Abe sent a ritual offering to Tokyo's Yasukuni Shrine, seen in parts of the region as a symbol of Japan's past militarism.
