June 16, 2017
Middle East and North AfricaIran’s Islamic revolution, which brought Shias to power in 1979, and the Sunni backlash have fueled a competition for regional dominance. This timeline highlights Sunni-Shia tensions in recent decade…
April 27, 2017
Energy and EnvironmentThe United States' dependence on oil has long influenced its foreign policy. This timeline traces the story of U.S. oil development.