Putin Visits Volgograd, Russia

Russian President Vladimir Putin (C) shakes hands with a man injured in a bomb blast, Volgograd, Russia, Jan. 1, 2014.

Pallbearers carry the coffin of Denis Andreev, age 24, who was killed by a suicide bomb blast in the main railway station, Volgograd, Russia, Jan. 1, 2014.

Russian President Vladimir Putin lays flowers at the site of a trolley bus explosion, Volgograd, Russia, Jan. 1, 2014.

Security personnel patrol the streets, central Volgograd, Russia, Jan. 1, 2014.

A policeman patrols a street with New Year's decorations, central Volgograd, Russia, Jan. 1, 2014.

A woman cries outside the main railway station, Volgograd, Russia, Dec. 31, 2013. 

Investigators work at the site of a blast on a bus in Volgograd, Russia, Dec. 30, 2013.

Members of the emergency services work at the site of a bomb blast on a bus in Volgograd, Russia, Dec. 30, 2013.

Smoke pours out of the railway station after an explosion, Volgograd, Russia, Dec. 29, 2013. 

Investigators work at the site of an explosion near the entrance to a train station in Volgograd, Russia, Dec. 29, 2013.