After the fall of Saddam Hussein's government in April 2003, the opportunity to participate in the U.S.-led effort to reconstruct Iraq attracted all manner of Americans -- restless professionals, Arabic-speaking academics, development specialists and war-zone adventurers. But before they could go to Baghdad, they had to get past Jim O'Beirne's office in the Pentagon. To pass muster with O'Beirne, a political appointee who screens prospective political appointees for Defense Department posts, applicants didn't need to be experts in the Middle East or in post-conflict reconstruction. What seemed most important was loyalty to the Bush administration. (snip) Interviews with scores of...