The United States and Russia are at odds on so many issues that the upcoming summit could convince their two presidents to give up on better relations and accept estrangement.

The conference in Poland will be a major test of the world’s collective political will to fight global warming. Following through on promises made in Paris will not be easy.

A long-awaited election in the Democratic Republic of Congo offers hope for the country’s first democratic transition, but a contested result could incite turmoil.

The U.S. withdrawal from Syria removes the main obstacle to a Turkish campaign to eradicate Syrian Kurdish forces and could lead to a more dangerous phase of Syria’s civil war.

The staying power of Nicolas Maduro’s embattled government may hinge on three critical allies: Russia, China, and Cuba.