President Trump flipped his lid after ex-national security adviser Michael Flynn delayed telling him about a call from Russian strongman Vladimir Putin after his inauguration.

Trump’s displeasure with the now-disgraced Flynn was revealed in memos written by fired FBI Director James Comey detailing his conversations with the president.

The identity of the foreign leader, with whom Trump spoke on Jan. 28, 2017, was blacked out in the copies of the memos sent to Capitol Hill on Thursday, but sources told AP that the mystery man was Putin, whom Trump has frequently praised and tried to cultivate as an ally.

Comey recounted how an angry Trump at a private White House dinner pointed his fingers at his head and complained that Flynn “has serious judgment issues” because he failed to promptly alert him to Putin’s call.