Sochi Threat: Olympic Torch Enters Militant Haven

U.S. officials concerned over security for the Winter Games.
3:00 | 01/27/14

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Transcript for Sochi Threat: Olympic Torch Enters Militant Haven
We turn to the latest on the olympic torch and the marathon journey. Now in a very violent part of Russia, still reeling from recent terrorist attacks. Brian Ross is here with the latest on the security alerts surrounding the winter games. Reporter: British security firms have concluded a terror attack is likely before or during the olympics, according to a stark new assessment reported by the bbc. The Russians continue to insist they don't need help and have the situation in hand. This morning, the on lilympic torch relay continued across Russia and moved into potentially dangerous territory. D dagestan, home base for the terrorist group that declared war on the nearby games. It's a wonderful place for olympics. Secondly, it's not close to the war zone. There is no war zone in Russia. Reporter: But with a week and half to go, sochi is taking on the look of hardened fortress. U.s. Athletes not to wear their uniforms outside the olympic village to avoid being started. Can you reassure our athletes going sochi that they'll be safe? I cannot give them 100% guarantee. These will be threatened olympics. Reporter: Russian police in the olympic city have not located this 22-year-old woman from dagestan, one of the alleged so called black widow suicide bombers. They have to try to defeat the toughest ied challenge there is. A suicide bomber in a crowd. There is no silver bullet. Some body scanning, facial recognition. It's not fool-proof. Reporter: The Russians continue to insist on a go it alone stance. American authorities are left in the dark to the intelligence and the plans in place. A lot of questions. Scary, Brian. Such a blunt threat.

This transcript has been automatically generated and may not be 100% accurate.

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