Low water levels have led to a traffic jam at one of the world’s busiest maritime passages. The bottleneck demonstrates how accelerating climate change is threatening global supply chains.

Years after defeating the Islamic State on the battlefield, world governments are now grappling with what to do with the thousands of war-related detainees in Syria.

Russia’s moves to mobilize thousands more troops and to annex more of Ukraine’s territory signal a new, potentially more dangerous phase of the war.