The president is trusting his gut, not Congress. The Atlantic staff writer Missy Ryan covers national security and has spent years reporting on American wars in the Middle East. She helps sift through the changing explanations for why the administration says it took America to war with Iran. And Senator Jeanne Shaheen, ranking member of the Foreign Relations Committee, shares how she thinks Democrats can responsibly act as a check on Donald Trump now that the war has started. Get more from your favorite Atlantic voices when you subscribe. You’ll enjoy unlimited access to Pulitzer-winning journalism, from clear-eyed analysis and insight on breaking news to fascinating explorations of our world. Atlantic subscribers also get access to exclusive subscriber audio in Apple Podcasts. Subscribe today at TheAtlantic.com/Listener. Learn more about your ad choices. Visit megaphone.fm/adchoices