Once a cheap answer to Russia’s artillery dominance, Ukrainian small and inexpensive first-person view (FPV) drones are now a force in their own right. They are used on a huge scale, with Ukraine projected to produce 2m this year.

During a visit to Kazakhstan, Russian President Vladimir Putin said that Thursday's air raids targeting Kyiv were 'a response' to Kyiv's use of American and British missiles against Russian territory.

Russia launched more than a hundred drones at Ukraine overnight and early Friday, killing one person and wounding eight others, officials said.