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

Al-Shabaab remains capable of carrying out massive attacks in Somalia and nearby countries despite a long-running African Union offensive against the Islamist terrorist group.

Comprehensive immigration reform has eluded Congress for years. With border crossings at a record high, how are policymakers responding?

President Trump’s decision to levy tariffs on China highlights concern about the ongoing role of the WTO and the future of global trade rules.

Tariffs have been applied over the years to protect homegrown industries and target competitors who are seen as using unfair trade practices. They impose costs on both importers and exporters and had been in decline until the recent U.S.-China trade war.