>> well, let's be clear, the president is not does not believe he is required to seek congress's authorization. what he believes is that when congress authorizes his proposal for a limited targeted strike so that assad understands that our response to his violation of a 100-year-old international norm not to use chemical weapons against either your own people or as a legitimate weapon of war, will have a certain and severe response. and that he has to be held accountable for atrocities like that. what president obama has said, and decided that although he knows he has the authority to act without congress's authorization, we're going to have a more unified and stronger response when congress authorizes the president's proposal. the strength of the united states response with unity is going to be far more impactful, not only on asads, but the region as well.