Michael Flynn Resigns as National Security Adviser

The resignation came after it was revealed that Mr. Flynn had misled Vice President Mike Pence and other top White House officials about his conversations with the Russian ambassador to the United States, according to a person close to the administration.

Turmoil at the National Security Council, From the Top Down

Staff members are struggling to make policy to fit the president’s Twitter posts, and the council’s leader, Michael T. Flynn, is facing an inquiry into his communications with Russia.

Trump Will ‘Look Into’ Reports That Flynn Discussed Sanctions With Russia

As the president claimed to be unaware of revelations about the embattled national security adviser, officials were scrambling to contain the fallout.