An exclusion zone goes into force in Sochi with one month to go before the Winter Olympics . Restrictions are imposed on air , sea and road traffic in the Sochi area . - The International Olympic Committee says it will not allow athletes from Russia or any other country who have been banned by their own government for doping violations to compete at the Games. One U.S. man says he canceled his Sochi trip after bombings in Volgograd .
An exclusion zone goes into force in Sochi with one month to go before the Winter Olympics . Restrictions are imposed on air , sea and road traffic in the Sochi area . Experts say Sochi is well protected but warn militants could strike softer targets . One U.S. man says he canceled his Sochi trip after bombings in Volgograd .