Ukraine's air force said on Friday Russia attacked it with 72 drones overnight though it downed 33 of them while 34 others disappeared from radar without reaching their targets.

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.

Hard Cat, a Ukrainian drone maker, told Business Insider that the uncrewed drone, the Black Widow 2, can take out surface targets like small boats.

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.