"George Stephanopoulos, former senior advisor to President Clinton and for more than 20 years host of This Week and Good Morning America, recounts never-before-told crises that decided the course of history, from the place 12 presidents made their highest-pressure decisions: the White House Situation Room. No room better defines American power and its role in the world than the White House Situation Room. And yet, none is more shrouded in secrecy...