Former CIA Director Michael Hayden has some advice for colleagues who ask whether they should take a job working for President Trump: Don’t do it. You will only endanger your own future and reputation. Hayden said it’s been hard to watch top Trump administration officials defend an often indefensible president. “The longer they were in the administration, the more their personal credentials were being threatened,” Hayden said. “At what point do you stop being a guard rail and become an enabler and a legitimizer?” Hayden's new book, “The Assault on Intelligence: American National Security in an Age of Lies,” serves...