Three decades after its founding, Latin America’s largest trade bloc continues to deal with internal divisions, including over a stalled trade deal with the European Union. New leadership in Argentina and Brazil could shake things up.

The threat of climate change and the rise of China have prompted renewed debate about the U.S. government’s role in shaping the economy.

Since its founding in 1944, the World Bank has evolved from a lender focused on European reconstruction to the preeminent international institution for economic development and poverty reduction.

The United Nations’ top leadership position has broad authority to steer the organization’s agenda, but its impact has varied widely since 1946.

Russia has renewed its long-stalled push for unification with Belarus, using the country as a launchpad for its war against Ukraine and a hardening bulwark against NATO rivals to the west.

The Organization of American States is an important forum for regional diplomacy and has become more assertive in promoting the rule of law, human rights, and fair elections as some states face domes…