His departure came just after reports surfaced that the Justice Department warned the Trump administration last month that Flynn misled administration officials regarding his communications with the Russian ambassador to the United States and was potentially vulnerable to blackmail by the Russians
The move comes less than a month into the job, making him one of the shortest-serving senior presidential advisers in modern history.
Gen. Keith Kellogg will be the interim national security adviser, multiple sources tell CNN. He most recently served as National Security Council chief of staff.
Read Flynns full reign action letter below:
February 13, 2017
In the course of my duties as the incoming National Security Advisor, I held numerous phone calls with foreign counterparts, ministers, and ambassadors. These calls were to facilitate a smooth transition and begin to build the necessary relationships between the President, his advisors and foreign leaders. Such calls are standard practice in any transition of this magnitude.
Unfortunately, because of the fast pace of events, I inadvertently briefed the Vice President Elect and others with incomplete information regarding my phone calls with the Russian Ambassador. I have sincerely apologized to the President and the Vice President, and they have accepted my apology