Japanese coast guard officers patrol in a rubber boat as Japanese activists hang their national flag on a small lighthouse and its perimeter on Uotsuri, the largest island in a small archipelago known in Japan as the Senkaku Islands and in China as the Diaoyu Islands, on Sunday, Aug. 19, 2012. (AP Photo/Kyodo News)

Japanese coast guard officers patrol in a rubber boat as Japanese activists hang their national flag on a small lighthouse and its perimeter on Uotsuri, the largest island in a small archipelago known in Japan as the Senkaku Islands and in China as the Diaoyu Islands, on Sunday, Aug. 19, 2012. (AP Photo/Kyodo News)