It is crucial to learn the facts about how COVID-19 emerged to prevent future outbreaks. But China is rebuffing calls for further investigations focusing on Wuhan.

The extradition process enables governments to bring fugitives abroad to justice, but it can be fraught with political tension, even when a treaty is in place.

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

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.

The separation of powers has spawned a great deal of debate over the roles of the president and Congress in foreign affairs, as well as over the limits on their respective authorities, explains this …