The G20 summit comes amid tensions over trade, climate, and refugee policy and increased uncertainty over the U.S. commitment to multilateral institutions.

Though President Trump withdrew from the TPP, the remaining members of the trade pact have forged ahead with a new version, leaving the U.S. role in the Asia-Pacific in question.

Under the command of Xi Jinping, the Chinese Communist Party faces a host of domestic and international challenges as it aims to bolster China’s great-power status.

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 …

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.