Michael T. Flynn, the national security adviser, resigned on Feb. 13 night after it was revealed that he had misled Vice President Mike Pence and other top White House officials about his conversations with the Russian ambassador to the United States.
New York Times: Michael Flynn resigns as national security adviser
Then-US National Security Adviser Mike Flynn speaks during the daily press briefing at the White House in Washington, DC, on Feb. 1, 2017.
