A Ukrainian drone struck an important arms depot inside Russia, the Ukraine military said Wednesday, three weeks after another drone blasted a major Russian armoury and three days after a drone smashed into a key oil terminal in Russia-occupied Crimea.

Over the past two years, Russia has fired more than 8,000 Iranian Shahed drones at Ukraine. In September alone, Russia hit Ukraine with more than 1,300 Shaheds. Russia is building a Shahed factory under Iranian license. Separately, Russian soldiers are training in Iran on Fath-360 ballistic missiles, which have a maximum range of 75 miles.