Since the end of World War II, nuclear weapons have threatened international relations. The Cold War produced stalemates that seemed to reduce the threat of nuclear conflict, but several countries’ m…

Three years ago, Abiy Ahmed came to power with promises of peace. Now, jarring reports of killings and sexual violence have come out of Tigray, Ethiopia’s northernmost region. Here’s what to know abo…

Europe’s largest humanitarian crisis in decades is unfolding in Ukraine. Russia’s invasion has displaced millions of people, thousands of whom remain in Ukraine, and experts say the number of refugee…