Top US envoy John Kerry fails to make headway over sea disputes in Beijing
Only result of Beijing visit was a commitment to seek greater co-operation on climate change

US Secretary of State John Kerry ended a visit to China without any breakthroughs on two matters at the top of his agenda - sovereignty tensions in the East Sea and the South China Sea.
The only solid outcome of the trip came in a joint statement issued by the two governments yesterday that vowed closer co-operation on climate change.
Shi Yinhong , a professor of international relations at Renmin University, said: "Kerry's China visit only provided an opportunity for both sides to make clear their differences on these issues."
Jin Canrong, with the same university, said it was expected no consensus on regional issues would be reached during the trip. Instead, the visit was important for Beijing and Washington to prepare for an upcoming meeting between President Xi Jinping and US President Barack Obama at a nuclear security summit at The Hague late next month.
"During this trip, Kerry also reiterated the US invitation for the Chinese navy to join the Rimpac exercise in Hawaii later this year. The US hoped China could send two ships but Beijing has yet to reply," Jin said.
The Rim of the Pacific Exercise is the world's largest international maritime warfare exercise and is hosted by the US Navy's Pacific Fleet.