PLEASE NOTE: THIS EDIT CONTAINS CONVERTED 4:3 MATERIAL<br/> <br />ROUGH CUT. (NO REPORTER NARRATION).<br/> <br />STORY: A female suicide bomber blew herself up in the entrance hall of a Russian train station on Sunday, killing at least 13 people in the second deadly attack in the space of three days as the country prepares to host the Winter Olympics.<br/> <br />The state Investigative Committee said the bomber detonated her explosives in front of a metal detector just inside the main entrance of Volgograd station.<br/> <br />Volgograd is a city of around 1 million people, about 430 miles (690 km) northeast of Sochi, where the Winter Olympics - a major prestige project for President Vladimir Putin - will open on Feb. 7.<br/> <br />It lies close to Russia's North Caucasus, a strip of mostly Muslim provinces plagued by near-daily violence in a long-running Islamist insurgency.<br/> <br />An attack by a female suicide bomber killed seven people in Volgograd on Oct. 21. On Friday, a car bomb killed three people in the
