Barack Obama delivers a statement on national security

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U.S. President Barack Obama delivers a statement on national security after receiving a briefing at the National Counterterrorism Center just outside Washington in McLean, Virginia December 17, 2015. Standingg with the president (L-R) are: National Counterterrorism Center Director Nicholas Rasmussen; Attorney General Loretta Lynch; Office of National Intelligence Director James Clapper; and Vice President Joe Biden. REUTERS/UNI PHOTO