Russia once saved drones for bigger targets. Now it'll send as many as 15 after just one Ukrainian soldier.

The growing number and cheap cost of drones mean Russia can send more after every Ukrainian soldier. Wolfgang Schwan/Anadolu via Getty Images Russia used to avoid using its drones against a lone Ukrainian soldier or a small group. Now, it's willing to send up to 15 drones after a single Ukrainian soldier, a defense official said. Drones are "very cheap" so they can be used at scale, "completely changing the nature of war." RIGA, Latvia — Warfighting drones have become so cheap that Russia h...