“I don’t know that I would characterize it as [an] active, recruited, knowing asset in the way that people in the intelligence community think of that term," McCabe said. "But I do think that Donald Trump has given us many reasons to question his approach to the Russia problem in the United States, and I think his approach to interacting with Vladimir Putin, be it phone calls, face-to-face meetings, the things that he has said in public about Putin, all raise significant questions.”

McCabe raised suspicions about Trump’s attitude toward Ukraine and NATO in the face of Russian aggression and said he’s had concerns about his admiration for Vladimir Putin since the ex-president fired him in March 2018, two days before he was due to retire, during the FBI’s investigation of Kremlin interference in the 2016 election.