National Edition News cover for December 30, 2013 - Women joining terrorist ranks: A police officer guards a main entrance to the Volgograd railway station hit by an explosion, in Volgograd, Russia, Sunday, Dec. 29, 2013. More then a dozen people were killed and scores were wounded Sunday by a female suicide bomber at a railway station in southern Russia, officials said, heightening concern about terrorism ahead of February's Olympics in the Black Sea resort of Sochi. (AP Photo)