Related:
Trump Fires Mark Esper as Defense Secretary
Mr. Esper’s departure means that Mr. Miller would — if he lasts — see out the end of the Trump administration at the Pentagon. While Mr. Trump has over two months left in office, it could still be a significant time, as Defense Department officials have privately expressed worries that the president might initiate operations, whether overt or secret, again Iran or other adversaries in his waning days in office.