Trump NatSec advisor HR McMaster to resign. Fox News analyst John Bolton to replace.

This is the darkest imaginable timeline.

National security adviser Lt. Gen. H.R. McMaster is leaving the Trump administration, the president announced via tweet on Thursday evening.

"I am very thankful for the service of General H.R. McMaster who has done an outstanding job & will always remain my friend," Trump tweeted. He added that former Ambassador John "Mustachioed" Bolton will replace McMaster in a change scheduled for April 9.

Bolton is a Fox News analyst. He's keeping the mustache. This is real life.