One Ukrainian innovation has been a system to verify drone strikes that awards points to successful operators, with an online marketplace for bonus kit.
"This is the war of exhaustion,” said one Ukrainian soldier at the front. “And we are exhausted. ... [But] I trust the stubbornness of my fellow citizens.”
The attack comes amid a new chill in relations between Moscow and Washington after Russia condemned the US seizure of an oil tanker in the North Atlantic.