Obama: Sochi Olympics are safe, but ...

SOCHI, RUSSIA - JANUARY 07:  (CHINA OUT, SOUTH KOREA OUT) Number of police officers pass by in the olympic park opened for the 2014 Winter Olympic Games in Sochi on January 7, 2014 in Sochi, Russia. The facility seen in the background is the "Police Village," the accomodation for police officers who will be on duty during the olympic games. (Photo by The Asahi Shimbun via Getty Images)
SOCHI, RUSSIA - JANUARY 07:  (CHINA OUT, SOUTH KOREA OUT) Number of police officers pass by in the olympic park opened for the 2014 Winter Olympic Games in Sochi on January 7, 2014 in Sochi, Russia. The facility seen in the background is the "Police Village," the accomodation for police officers who will be on duty during the olympic games. (Photo by The Asahi Shimbun via Getty Images)

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    Obama: Sochi Olympics are safe, but ...

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In large settings like the Olympics, there is "always some risk," President Obama tells CNN in an exclusive interview.