Iranian UAVs used by Russia to attack Ukraine are based on stolen Western technology

This is stated in CNN's material.

Conflict Armament Research (CAR), a British organization that researches weapons components, has found that the Shahed-136 drones sold by Iran to Russia are equipped with an engine based on German technology – technology that Iran illegally acquired almost 20 years ago.

"Western officials are also concerned that Russia may share Western-made weapons and equipment recovered on the Ukrainian battlefield with the Iranians. So far, there’s no firm evidence that has happened," the journalists added.

• The Wall Street Journal previously reported that Iran is helping Russia wage an aggressive war in Ukraine and is delivering ammunition by water – across the Caspian Sea to Astrakhan.