The Muslim separatist group, based in the Xinjiang province in northwest China, presents a heightening security challenge for Beijing.

The Group of Twenty, an informal gathering of many of the world’s largest economies, is the premier global forum for discussing economic issues. But it has faced divisions over trade, climate change,…

The U.S. government responds to scores of disasters each year in coordination with foreign, state, and local partners, but more frequent and severe storms, fires, and floods are straining resources.

Artificial intelligence breakthroughs promise unprecedented opportunity but also economic, political, and social disruption. Experts say AI needs oversight to ensure the changes it engenders are for …