The U.S. Navy’s dominance of the world’s oceans has made it an indispensable foreign policy tool as well as a guarantor of global trade, but a mix of challenges is raising difficult questions about i…

Backgrounder examines the Intermediate-Range Nuclear Forces (INF) Treaty, which may now be imperiled by mutual suspicion between Russia and the United States.

The European Union has navigated a thicket of external and internal crises in recent years, including mass migration and Brexit. What are the union’s core institutions, and what roles do they play?