But having made my decision as Commander-in-Chief based on what I am convinced is our national security interests, I'm also mindful that I'm the President of the world's oldest constitutional democracy. I've long believed that our power is rooted not just in our military might, but in our example as a government of the people, by the people, and for the people. And that's why I've made a second decision: I will seek authorization for the use of force from the American people's representatives in Congress.

Barack Obama, White House, Aug 31, 2013