Last October, senior Obama officials anonymously
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![Sheehan](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/5/17/1368791816024/sheehan1.png)
Assistant Defense Secretary Michael Sheehan, right, testifies before the Senate Armed Services Committee's May 16, 2013, hearing on the 2001 Authorization for Use of Military Force. Photo: AP/Carolyn Kaster