The matter of Gen. Michael Flynn began with criminal conduct. But it was not committed by Flynn. The crimes were leaking the contents of classified telephone conversations between Flynn and Russian Ambassador Sergey Kislyak and revealing the identity of Flynn as a party to the conversations. The sorry saga began with a January 12, 2017 column about the Flynn/Kislyak conversations by The Washington Post’s David Ignatius, who described his source as a “senior U.S. government official,” i.e., an Obama administration functionary. Whoever told Ignatius the fact of and substance of the eavesdropped conversations committed a felony by leaking classified information....