What’s the holdup? Deputy national security advisor K.T. McFarland is waiting to leave the White House to prepare for her new assignment as the U.S. ambassador to Singapore. An administration official confirmed back on April 9 that McFarland, a veteran of the Reagan administration who was a Fox News contributor when she was brought into the National Security Council with former national security advisor Mike Flynn, would be leaving the NSC.

But Flynn’s successor, H.R. McMaster, has yet to name a replacement for McFarland. That, I’m told, is holding up the transition process. McFarland has continued to report to her job at the NSC and can’t begin the State Department’s procedure for becoming an ambassador.