Twitter. That’s how Secretary of State Rex Tillerson found out he was fired today. The news came on the heels of Tillerson calling Russia “an irresponsible force of instability”. He hands over the reins to CIA director Mike Pompeo - who is now in charge of planning a historic U.S.-North Korea meeting. Vox’s Zack Beauchamp describes Tillerson’s rocky relationship with Trump, and Ezra Klein reflects on this administration’s high turnover.