Ukraine Enters a Dark New Era of Drone Warfare

The war in Ukraine has an ominous new noise. People living in Afghanistan and Nagorno-Karabakh have talked about a sound that makes them run for cover. And on Monday, that whirr arrived in the skies above Kyiv. Russia has ramped up its use of Iranian-made "suicide drones" in Ukraine, which travel in groups and explode by diving at their targets, obliterating themselves in the process. On Monday, dozens of drones attacked Ukrainian cities during morning rush hour, killing at least four people when they struck an apartment building in Kyiv, the Ukrainian capital.