The UN climate meeting could show progress on outstanding issues from previous rounds, but negotiators are focused on modest steps forward rather than major breakthroughs, says CFR’s Michael Levi.

The visit of Pope Francis cast a spotlight on U.S. climate policies, which rely on executive action to chase emission reduction targets pledged ahead of a year-end conference, write CFR’s Varun Sivar…

International donor support for fighting HIV has flat-lined, yet the United States--the world’s largest donor--is under fire from the global community, and domestic political support for Obama admini…

The European Union’s divided approach to the mass influx of migrants poses another threat to the goal of binding the continent economically and politically, writes CFR’s Sebastian Mallaby.