The attack in eastern Germany is another alarming example of how the terrorist threat is evolving, with more far-right perpetrators attempting to broadcast their brutality.

The United States has granted tens of thousands of special visas to Afghans who aided U.S. forces, but many others are still waiting. How does this compare with previous efforts?

A pending U.S. withdrawal from the Treaty on Open Skies has alarmed some allies in Europe, who fear losing a valuable means of monitoring Russia.

Denuclearization talks over the weekend ended in another stalemate, and it remains to be seen if negotiations will resume in the coming weeks.