Brennan: Trump is trying to get back at me
Retired Adm. McRaven wrote rebuke of Trump
Clapper: McRaven is a personal hero of mine
Ex-CIA official to Trump supporter: We're done
WH defends decision to revoke clearances
Brennan walks back comment on Trump treason
John Brennan: Trump is 'drunk on power'
Trump: I've never respected John Brennan