Outgoing Pentagon policy chief Eric Edelman said today that defense official Joseph Benkert is slated to stay on until the new administration finds a successor and that another defense official, Michael Vickers, may stay even longer. Benkert is the assistant secretary of defense for global security affairs. Vickers is the assistant secretary of defense for special operations, low-intensity conflict and interdependent capabilities. Edelman did not announce the news, but in a brief interview with InsideDefense.com following an appearance at a...