Ukraine marked 1,000 days on Tuesday since Russia's full-scale invasion, with weary troops battling on numerous fronts, Kyiv besieged by frequent drone and missile strikes, and officials preparing for Donald Trump to reclaim the White House in January.

Both Ukraine and Russia are on track to make around 1.5 million drones this year, mostly small "first-person view" vehicles that cost a few hundred dollars apiece and can be piloted remotely to identify and attack enemy targets.