China sends documents to the United Nations backing claim to Paracel Islands . - The Philippines says it will not accept China's claims over islands in South China Sea. Tensions flared after China sent an oil rig into disputed waters . China claims CNOOC has been exploring the area for 10 years , and this latest drilling operation `` falls well within China 's sovereignty and jurisdiction . '' Both sides have accused the other of ramming their ships .
China sends documents to the United Nations backing claim to Paracel Islands . - The Philippines says it will not accept China's claims over islands in South China Sea. Tensions flared after China sent an oil rig into disputed waters . Both sides have accused the other of ramming their ships .