1:36ABC NewsAugust 20, 2018Trump taunts former CIA director to sue over revoked security clearanceIn a tweet, the president called John Brennan "the worst CIA Director in our country's history."Up Next in newsTrump: 'I never respected' John BrennanAugust 17, 2018Former security officials stand with BrennanAugust 17, 2018Trump responds to critics of Brennan clearance decisionAugust 18, 2018