Russia ramps up security ahead of Olympics after bombings kill 34

A suicide bomber killed 14 people on a Volgograd bus Monday, the second attack in the city in two days.
Denis Tyrin/AP

Copyright 2014 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide — from Peter King, Tom Verducci, Lee Jenkins, Grant Wahl, Andy Staples and more — delivered straight to you, along with up-to-the-minute news and live scores.