A female suicide bomber attacked a bus is Volgograd, Russia, and killed six people. The attack is raising concerns about security at the upcoming Sochi 2014 Olympics. CBS News correspondent Mark ... more 
A female suicide bomber attacked a bus is Volgograd, Russia, and killed six people. The attack is raising concerns about security at the upcoming Sochi 2014 Olympics. CBS News correspondent Mark Phillips reports. less 
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Tue, Oct 22, 2013 8:44 AM EDT