They need to bring this whistleblower in from the cold, stat

2016: "We get a traitor like Berghdal, a dirty rotten traitor, who by the way when he deserted, six young beautiful people were killed trying to find him. You know, in the old days ......bing - bong. When we were strong, when we were strong."

"Basically, that person never saw the report, never saw the call, he never saw the call — heard something and decided that he or she, or whoever the hell they saw — they’re almost a spy. I want to know who’s the person, who’s the person who gave the whistleblower the information? Because that’s close to a spy. You know what we used to do in the old days when we were smart? Right? The spies and treason, we used to handle it a little differently than we do now."

The whistle-blower who revealed that President Trump sought foreign help for his re-election and that the White House sought to cover it up is a C.I.A. 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 C.I.A., the people said. Little else is known about him. His complaint made public 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.

The whistle-blower’s expertise will likely add to lawmakers’ confidence about the merits of his complaint, and tamp down allegations that he might have misunderstood what he learned about Mr. Trump. He did not listen directly to a July call between Mr. Trump and President Volodymyr Zelensky of Ukraine that is at the center of the political firestorm over the president’s mixing of diplomacy with personal political gain.

Lawyers for the whistle-blower refused to confirm that he worked for the C.I.A. and said that publishing information about him was dangerous.

“Any decision to report any perceived identifying information of the whistle-blower is deeply concerning and reckless, as it can place the individual in harm’s way,” said Andrew Bakaj, his lead counsel. “The whistle-blower has a right to anonymity.”

A C.I.A. spokesman declined to comment. A spokeswoman for the acting director of national intelligence, Joseph Maguire, said that protecting the whistle-blower was his office’s highest priority. “We must protect those who demonstrate the courage to report alleged wrongdoing, whether on the battlefield or in the workplace,” Mr. Maguire said at a hearing on Thursday, adding that he did not know the whistle-blower’s identity.

Dean Baquet, the executive editor of The New York Times, said The Times was right to publish information about the whistle-blower. “The role of the whistle-blower, including his credibility and his place in the government, is essential to understanding one of the most important issues facing the country — whether the president of the United States abused power and whether the White House covered it up.”

Agents, officers and analysts from the military, intelligence and law enforcement communities routinely work at the White House. Often, they work on the National Security Council or help manage secure communications, like calls between the president and foreign leaders.