'Jihadis' use video to threaten Sochi Olympics tourists
Two men speaking in a video posted on a website used by Islamic militants have claimed responsibility for a deadly suicide bombing in Volgograd, Russia, and threatened more attacks at the Sochi Winter Olympics.
The men, who according to the video have already died in the Vologograd attack, say: "We've prepared a present for you and all tourists who'll come over.
"If you will hold the Olympics, you'll get a present from us for the Muslim blood that's been spilled."
The pair say they are from Dagestan, a southern republic in the south of Russia home to a long-running Islamist insurgency.