This book presents policy and oversight issues for Congress arising from (1) maritime territorial disputes involving China in the South China Sea (SCS) and East China Sea (ECS) and (2) an additional dispute over whether China has a right under international law to regulate U.S. and other foreign military activities in its 200-nautical-mile maritime Exclusive Economic Zone (EEZ). China is a party to multiple maritime territorial disputes in the SCS and ECS, including, in particular, disputes over the Paracel Islands, Spratly Islands, and Scarborough Shoal in the SCS, and the Senkaku Islands in the ECS. Maritime territorial disputes involving China in the SCS and ECS date back many years, and have periodically led to incidents and periods of increased tension. The disputes have again intensified in the past few years, leading to numerous confrontations and incidents, and heightened tensions between China and other countries in the region, particularly Japan, the Philippines, and Vietnam.