Ukrainian drone strikes Russian plant after record attacks by Moscow in June

A Russian drone targets a building (Efrem Lukatsky/AP)

A Ukrainian drone has struck a Russian industrial plant 800 miles from Ukraine, a local official said, after Kyiv prioritised the weapon’s development and Russia pounded Ukraine with a record number of drones last month.

Both sides have raced to improve drone technology and enhance their use on the battlefield, deploying increasingly sophisticated and deadlier drones, turning the war into a testing ground for the new weaponry.