WASHINGTON — When Ashton Carter took up duties as the Pentagon's second-ranking official three years ago he described his role as "alter ego" to his boss, then-Defense Secretary Leon Panetta, whose public profile had been boosted by his role in planning the raid that killed Osama bin Laden.
Carter, a relative unknown on the national stage, would be President Barack Obama's fourth Pentagon chief if he is nominated — as senior GOP Sen. Jim Inhofe said Tuesday he would be — and confirmed. That would thrust Carter out of his comfort zone as a behind-the-scenes confidante and into the center of more defense and foreign policy problems, arguably, than Panetta faced in his 20 months as defense secretary.
When Chuck Hagel abruptly resigned under White House pressure on Nov. 24 after less than two years as defense secretary, Carter's name was among the first to surface as a potential successor.
That is largely because of his academic and government credentials and his reputation as one of the brightest minds in the national security establishment.
And because the more obvious choices to replace Hagel, including Sen. Jack Reed, D-R.I., and former Pentagon executive Michele Flournoy, who would have been the first woman to serve as defense secretary, took themselves out of the running.
Administration officials continue to say Carter is at the top of the short list, and that no final decision has been made. But Inhofe, the top Republican on the Senate Armed Services Committee, says he was told Carter is Obama's pick. Inhofe said he supports that decision.
Carter has extensive experience in the national security arena. Before he served as deputy defense secretary from October 2011 to December 2013 he was the Pentagon's technology and weapons-buying chief for more than two years.
During the administration of President Bill Clinton he was assistant secretary of defense for international security policy. Before that he was director of the Center for Science and International Affairs at Harvard University's John F. Kennedy School.