Top security officials fretted about nuclear war early in Trump administration, according to ‘Anonymous’ op-ed author

Taylor said then-Defense Secretary James Mattis cornered him one day after a Situation Room meeting.

“‘You all need to prepare like we’re going to war,’ he warned. Mattis was serious. DHS should assume the homeland was in mortal danger.”

The Department of Homeland Security took a step it had never taken before, according to Taylor, who is best known for writing an anonymous op-ed in The New York Times in 2018 describing a “quiet…