The Sochi Olympic torch relay has been in the city of Volgograd, where a double suicide bombing claimed 34 lives less than a month ago. <br /><br />In the southern Russian city. The visit came as a video emerged, in which the men said to have carried out the suicide bombings warn of an attack on the Winter Olympics.<br /><br />Al Jazeera's Paul Brennan reports from Volgograd.
