President Barack Obama delivers his speech to the Nunn-Lugar Cooperative Threat Reduction (CTR) symposium at the National Defense University in Washington, Monday, Dec. 3, 2012. (AP Photo/Manuel Balce Ceneta)

Associated Press
President Barack Obama delivers his speech to the Nunn-Lugar Cooperative Threat Reduction (CTR) symposium at the National Defense University in Washington, Monday, Dec. 3, 2012. (AP Photo/Manuel Balce Ceneta)
President Barack Obama delivers his speech to the Nunn-Lugar Cooperative Threat Reduction (CTR) symposium at the National Defense University in Washington, Monday, Dec. 3, 2012. (AP Photo/Manuel Balce Ceneta)
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