In this May 28, 2014, file photo, President Barack Obama arrives to deliver the commencement address to the U.S. Military Academy at West Point's Class of 2014, in West Point, N.Y. As Obama makes the case for U.S. airstrikes in Iraq, he’s drawing on a use of force doctrine he outlined less than three months ago, when the potential for deploying the military overseas appeared to be something he was trying to avoid. In a May speech at the U.S. Military Academy, Obama said he would use military force under two scenarios: a direct threat against Americans or U.S. interests and a humanitarian crisis on a scale that he said would “stir the conscience.”(AP Photo/Susan Walsh, File)

In this May 28, 2014, file photo, President Barack Obama arrives to deliver the commencement address to the U.S. Military Academy at West Point's Class …

Published on December 30, 2014