United States. Federal Bureau of Investigation

Former FBI Deputy Director Andrew McCabe says it's not normal for the bureau to open investigations into the president.

New York Times reporter Michael Schmidt doesn't have a badge or a gun or the ability to compel people to talk to him. Nevertheless, he has found sources to help him break major stories concerning special counsel Robert Mueller's investigation into connections between President Trump, his associates and Russia.

Janet Reitman of The New York Times Magazine says counter-terrorism strategists failed to adequately address right-wing domestic extremism — which enabled the movement to become even more dangerous.

The Guardian's Carole Cadwalladr's investigation into Cambridge Analytica's role in Brexit has led her to Russian connections and the Trump campaign. She says British investigators are now "working very closely with the FBI."

James Comey To 'Fresh Air': The FBI Isn't 'On Anybody's Side'

Investigative journalists Michael Isikoff and David Corn trace Trump's ties with Russia back to 2013 and his business dealing with a Putin-connected oligarch.

As the investigation into Russia's interference in the 2016 presidential election continues, more and more attention has focused on the infamous Russia dossier on Donald Trump compiled by former British spy Christopher Steele.

Journalist Garrett Graff considers Robert Mueller's tenure as FBI director as a way of understanding his approach to the investigation into the Trump campaign and Russian interference in the 2016 election.

James R. Fitzgerald, the former FBI agent and profiler details how his analysis of the unabomber's manifesto and letters, helped lead to his identification and capture.

Matthew Rosenberg of The New York Times began writing about Gen. Flynn in 2009 in Afghanistan; now he's investigating Flynn's role in Russia's interference in the 2016 presidential election.