The events of 9/11 profoundly transformed how the United States engages with the rest of the world. Secretary Hillary Rodham Clinton was at the forefront of that transformation, first as a senator from New York (2001-2009) and then as secretary of state (2009-2013) in the Obama administration. In this conversation with 9/11 Memorial & Museum’s Executive Vice President and Deputy Director for Museum Programs Clifford Chanin, Secretary Clinton reflects upon the attacks, the power and limitations of diplomacy in the ensuing two decades, and what the future might hold for American foreign policy.