President Trump has proposed steel and aluminum tariffs, citing U.S. national security interests. Some experts argue that his plan could provoke retaliation from countries like China, or even a trade war.

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

President Trump and Republican lawmakers say their tax legislation will increase the global competitiveness of U.S. businesses, but experts are divided over whether it will spur growth, and many are …

U.S. political conventions offer the parties a place to unite around presidential candidates and a vision for foreign and domestic policy.

There have long been disputes over the role of Congress and the president in waging military action.