National security adviser Lt. Gen. H.R. McMaster is on his way out of the White House.
President Donald Trump says former U.S. Ambassador to the United Nations John Bolton will take over the role on April 9.
In a statement, McMaster said he will also request retirement from the U.S. Army. That would take effect this summer.
McMaster's departure isn't really a surprise. NBC News reported in early March that McMaster could leave the White House as soon as April. CNN reported last week that Trump was ready to replace McMaster.
