US journalist Theo Curtis released from Syria captivity
American journalist Theo Curtis has been released after being held captive by al-Nusra militants in Syria since 2012, the US has announced.
US Secretary of State John Kerry said he was "relieved and grateful", adding that the US had worked with more than two dozen countries to help secure his release.
The BBC's Rajini Vaidyanathan says US and Qatari officials had worked closely on the release.