By withdrawing from the Paris accord, the United States—the second-largest global emitter—could undercut collective efforts to reduce emissions, transition to renewable energy sources, and lock in fu…

An intense international debate over who manages parts of the internet’s technical infrastructure is likely to feed a broader discussion of internet-related public policy.

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