US hails 'constructive' China summit
US President Barack Obama and Chinese leader Xi Jinping have ended a two-day summit described by a US official as "unique, positive and constructive".
The two leaders spent nearly six hours together on Friday and another three hours on Saturday morning at the Sunnylands retreat in California.
They discussed a wide range of issues, from North Korea to cyber security and economic and environmental issues.
North America editor Mark Mardell reports from Palm Springs.