Michael T. Flynn, left, the national security adviser, before boarding Air Force One on Friday. He accompanied President Trump and Japan’s prime minister, Shinzo Abe, on a visit to Mar-a-Lago, Mr. Trump’s club in Palm Beach, Fla.Credit...Al Drago/The New York Times Over the weekend, The Times published this investigation into the agency that Michael T. Flynn was leading before he stepped down. Rea