President Trump has revoked security clearance for John Brennan, the former director of the CIA. White House Press Secretary Sarah Huckabee Sanders announced the decision Wednesday, reading a statement from Trump at the press briefing that claimed Brennan had displayed "erratic conduct," including "wild outbursts on the internet and television." Brennan has frequently criticized Trump, taking to Twitter to call the president "treasonous" and "imbecilic." Sanders said the White House is additionally reviewing the clearances of other officials, such as former FBI agent Peter Strzok; former national security officials Susan Rice, James Clapper, and Michael Hayden; and current Justice Department official Bruce Ohr.