The whistleblower who revealed that President Donald Trump sought foreign help for his reelection and that the White House sought to cover it up is a CIA officer who was detailed to work at the White House at one point, according to three people familiar with his identity.

The man has since returned to the CIA, the people said. Little else is known about him. His complaint made public on Thursday suggested he was an analyst by training and made clear he was steeped in details of American foreign policy toward Europe, demonstrating a sophisticated understanding of Ukrainian politics and at least some knowledge of the law.

via Whistleblower is a CIA officer detailed to White House