Watch Paul M. Kennedy, director of International Security Studies and the Dilworth Professor of History at Yale University, analyze characteristics of great powers and what constitutes national stren…

This meeting is part of a series hosted with the National History Center featuring prominent historians who will examine the events and times that shaped foreign policy as we know it today. The Sine…

Watch Senator John F. Kerry speak about global climate change, its implications for international security, and the diplomatic opportunities it presents.

Watch Senator John Kerry (D-MA) discuss climate change as a U.S. national security threat and the opportunity for the United States to pursue global leadership on the issue.