Russia's transition to drones directed by fiber-optic cables, which makes jamming ineffective, is giving them an advantage on the battlefield as Kyiv and Moscow gear up for a pivotal stretch of fighting ahead of U.

Missile-toting drone boats blew up two Russian helicopters and damaged a third in a Black Sea skirmish. Why it matters: Ukrainian outlets said the shoot-downs were world firsts. Engagements like this — especially with video evidence — leave little room for drone warfare naysayers.