President Obama speaks at the Nunn-Lugar Cooperative Threat Reduction (CTR) symposium at the National Defense University at Fort McNair in Washington on Monday, Dec. 3, 2012. (AP Photo/Charles Dharapak)
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President Obama speaks at the Nunn-Lugar Cooperative Threat Reduction (CTR) symposium at the National Defense University at Fort McNair in Washington on Monday, Dec. 3, 2012. (AP Photo/Charles Dharapak)
