Guests: Joe Cirincione, Reid Wilson, Rosie Gray

North Korea tested a nuclear bomb on Sunday. Secretary of Defense James Mattis warned that even threatening a launch against the United States or its allies “would be met with massive military response.” We start off this hour discussing the escalating conflict between the U.S. and North Korea and how to respond with JOE CIRINCIONE, President of Ploughshares Fund. Then, we turn to domestic politics with Congress back from their August recess and a full plate before them. There’s Harvey relief aid, the debt ceiling increase, tax reform, even the border wall – all while the shadow of the failed Obamacare repeal still lingers, and relations between GOP leadership and President Trump are reportedly souring. We’ll talk about the GOP and White House agendas and the politics that could stand in the way of passing legislation with REID WILSON, correspondent for The Hill, and ROSIE GRAY, White House correspondent for The Atlantic.