Olympic committees sent 'terrorist threats' over Sochi Games Amid rising concerns about threats from militants to disrupt the Sochi games, the US military is making two ships in the Black Sea available should American support be required during the Olympics. In Sochi, security forces were already searching for Ruzanna Ibragimovaya, the 23-year-old widow of a slain Islamist militant, who may have arrived to the Olympic host city on 11 or 12 January. " (She) may be used as a terrorist-suicide bomber by (insurgency) leaders to organise terrorist acts during preparations for and during the 2014 Winter Olympics," read the letter Russia's Federal Security Services to local police, asking police to look immediately into the matter. On Monday a video was published in which two men from a purported Islamist group claimed responsibility for twin suicide bombings in the southern city of Volgograd last month that killed at least 34 people, and warned Mr Putin to expect more attacks if the games go ahead in Sochi. US military and intelligence officials have been reportedly been studying contingency plans for evacuating Americans from the games in case of a crisis. But US officials concluded there would be major obstacles to mounting a large-scale effort by the military or other US.government resources to evacuate Americans from Sochi, a source with knowledge of the discussions told Reuters. Russian authorities have historically been reluctant to allow foreign military forces, especially those of the United States, on Russian territory. The Russian president has staked his political reputation on organising a successful Olympics and tightened security nationwide after insurgents who hope to create an Islamist state in the North Caucasus threatened to attack the games, which start on 7 February.