Tensions between China and Japan continued to rise Tuesday as Tokyo sealed a deal to purchase islands that Chinese authorities say belong to them.
China responded by sending two patrol ships to the hotly contested waters. According state-run Xinhua news agency, the two marine surveillance ships were deployed to assert what it called the country’s undisputed sovereignty in the area.
The islets, known in China as Diaoyu and in Japan as Senkaku, lie near strategic shipping and fishing grounds, as well as potential oil and gas reserves.