Machine guns and combat aircraft aren't enough to stop Ukraine's drone boats from killing Russian warships, general says

• Ukraine's fleet of naval drones has been used to damage and destroy Russian warships.
• Moscow has made some efforts to defend against this threat, like putting machine gun crews on ships.
• But Kyiv is "still a few steps ahead," a Ukrainian general said.

Ukraine's formidable fleet of exploding naval drones have punished the Russian Black Sea Fleet since these weapons were first introduced, leaving a trail of damaged and destroyed warships in its wake.