Overnight Defense: Trump says 'rogue killers' could be behind missing journalist | Sends Pompeo to meet Saudi king | Saudis may claim Khashoggi killed by accident | Ex-VA chief talks White House 'chaos' | Most F-35s cleared for flight

Happy Monday and welcome to Overnight Defense. I'm Ellen Mitchell, and here's your nightly guide to the latest developments at the Pentagon, on Capitol Hill and beyond. And if you don't get our newsletter, CLICK HERE to subscribe.&...