The West has long focused on making exquisite weapons, but the war is demonstrating that weapons that are adaptable and widely available is key.

The Russian Defense Ministry claimed that Ukraine hadn’t abided by its own ceasefire, saying that air defenses shot down 53 Ukrainian drones over Russian regions, the illegally annexed Crimean Peninsula and the Black Sea between Tuesday evening and dawn Wednesday.

Ukraine’s military says Russian forces lost 810 personnel in the past day, along with artillery systems, drones, and other equipment, as fighting continues across several regions. Ukrainian special forces also reported successful strikes on Russian naval ...