Overnight Defense: Pentagon chief says he opposes invoking Insurrection Act for protests | White House dodges on Trump's confidence in Esper | 'Angry and appalled' Mattis scorches Trump

Happy Wednesday and welcome to Overnight Defense. I'm Rebecca Kheel, and here's your nightly guide to the latest developments at the Pentagon, on Capitol Hill and beyond. CLICK HERE to subscribe to the newsletter.THE TOPLINE: Defense...