With economic inequality at an all-time high, some U.S. presidential candidates are proposing dramatic shifts to the U.S. tax code. How have similar plans worked elsewhere in the world?

Federal investigators in Brazil have uncovered corruption at the highest levels of the government and in the country’s largest corporations.

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

Charges of foreign power interference in the U.S. presidential election have raised grave national security concerns and touched off multiple federal inquiries that could drag on for months.

China’s central government has cracked down on press freedom as the country expands its international influence, but in the internet age, many of its citizens hunger for a free flow of information.