Timeline examines foreign policy milestones from Donald Trump’s first three years in office.

The United States' dependence on oil has long influenced its foreign policy. This timeline traces the story of U.S. oil development.

The nuclear arms race was perhaps the most alarming feature of the Cold War competition between the United States and Soviet Union. Over the decades, the two sides signed various arms control agreeme…

Immigration has been an important element of U.S. economic and cultural vitality since the country’s founding. This interactive timeline outlines the evolution of U.S. immigration policy after World …

The events of September 11, 2001, set in motion sweeping changes to U.S. intelligence and counterterrorism practices, launched two major wars, and altered Americans’ daily routines. This timeline tra…