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.

President Donald J. Trump has wide latitude to enact the sweeping changes to U.S. foreign policy that he has promised, but his executive authority is constrained by congressional legislation, treaty …

Sub-Saharan Africa is home to many of the world’s longest-ruling heads of state. Pro-democracy advocates have at times successfully stopped presidents from extending their mandates, but the authorita…

President Donald Trump’s rejection of the Trans-Pacific Partnership (TPP) has intensified debate over U.S. trade policy and its far-reaching effects.