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 Taliban surged back to power two decades after U.S.-led forces toppled their regime in what led to the United States’ longest war.

In March 2003, U.S. forces invaded Iraq vowing to destroy Iraqi weapons of mass destruction (WMD) and end the dictatorial rule of Saddam Hussein. When WMD intelligence proved illusory and a violent insurgency arose, the war lost public support. Saddam was captured, tried, and hanged and democratic elections were held. In the years since, there have been over 4,700 U.S. and allied troop deaths, and more than one hundred thousand Iraqi civilians have been killed. Meanwhile, questions linger over Iraq's fractious political situation.

Over the course of two hundred years, the United States and Mexico have developed rich diplomatic, economic, and cultural ties but at times clashed over borders, migration, trade, and an escalating d…

The United States and China have one of the world’s most important and complex bilateral relationships. Since 1949, the countries have experienced periods of both tension and cooperation over issues …

Over the two centuries since Colombia’s independence, the relationship between Washington and Bogotá has evolved into a close economic and security partnership. But it has at times been strained by U…

Donald Trump’s first presidential term marked a sharp departure from previous approaches to U.S. leadership in areas such as diplomacy and trade. Here are major foreign policy moments from his four y…