U.S. Secretary of State John Kerry looks out of his room at the Beau Rivage Palace Hotel during a break during the Iran nuclear program talks in Lausanne
Media playback is unsupported on your device
Video

Iran nuclear deal: Kerry extends stay as talks overrun

Talks on Iran's nuclear programme will continue until at least Thursday morning, two days after the original deadline, the US says.

US Secretary of State John Kerry has extended his stay to continue negotiations, officials say.

However, a number of foreign ministers have left the talks and China warned compromise was essential, otherwise "all previous efforts will be wasted".

A deal would curb the nuclear programme in return for sanctions relief.

Ben Bland reports,

Go to next video: 'Significant progress' in Iran talks