The decision came 10 days before Donald Trump had been sworn in as president, in a conversation with President Barack Obama’s national security adviser, Susan Rice, who had explained the Pentagon’s plan to retake the Islamic State’s de facto capital of Raqqa with Syrian Kurdish forces whom the Pentagon considered the U.S.’s most effective military partners. Obama’s national security team had decided to ask for Trump’s sign-off, since the plan would all but certainly be executed after Trump had become president.

Flynn didn’t hesitate. According to timelines distributed by members of Congress in the weeks since, Flynn told Rice to hold off, a move that would delay the military operation for months.

If Flynn explained his answer, that’s not recorded, and it’s not known whether he consulted anyone else on the transition team before rendering his verdict. But his position was consistent with the wishes of Turkey, which had long opposed the United States partnering with the Kurdish forces – and which was his undeclared client.

Trump eventually would approve the Raqqa plan, but not until weeks after Flynn had been fired.