Without H. R. McMaster as head of the National Security Council, president Trump could still be more aggressive in Afghanistan should he desire, so considering McMaster is a hot-head, referred to Trump by pathetically hot-headed establishment provocateur John McCain, and that McMaster granted serial intelligence unmasker Susan Rice continued access to sensitive intelligence information, the president will have lost nothing in dumping McMaster, with much to gain by returning Bannon to membership in the NSC after McMaster had banned him upon arrival at the White House.