SNIPPET: "Sochi 2014 Winter Olympics security will be beefed up following Boston Marathon explosions, officials say Russian sports officials said they will beef up security at forthcoming sports events and the Sochi 2014 Winter Olympic Games in the wake of deadly explosions at Boston's marathon that killed three people, and injured over 140 others." "Sochi 2014 Winter Olympics security will be beefed up following Boston Marathon explosions, officials say" SNIPPET: "The World Athletics Championship takes place in Moscow on Aug 10-18, and the event is seen as a dress rehearsal for the 2014 Winter Games in the Black Sea resort...