HANOI, Vietnam (AP) — A top Chinese diplomat and Vietnamese officials made no progress in talks Wednesday about an increasingly bitter confrontation over a giant oil rig China deployed in the disputed South China Sea, officials said.

State Councilor Yang Jiechi is the most senior Chinese diplomat to visit Vietnam since China placed the rig off the Vietnamese coast last month. Both countries have accused the other of violating their territorial rights and instigating clashes between ships around the rig.