White House National Security Advisor Michael Flynn (C) arrives prior to a joint news conference between Canadian Prime Minister Justin Trudeau and US President Donald Trump at the White House in Washington, US, February 13, 2017.

President Donald Trump asked for the resignation of his national security adviser, Michael Flynn, after his level of trust in Flynn eroded to the point that he felt he needed to make a change, White House spokesman Sean Spicer told reporters on Tuesday.

A day after Flynn’s resignation, Spicer said Trump had been concerned that Flynn had misled Vice President Mike Pence over his contacts with Russian officials before Trump took office. Trump had been reviewing Flynn’s situation for a few weeks, he said.

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