Ukraine, despite having 1 of the best air defenses in Europe before the Russian invasion, was not able to defy the many attacks of the Russians, which in terms of the means of attack utilized were able to overload it. 1 of the most common types of weapons utilized by the Russians were the Iranian-made Shahed 131/136 kamikaze drones, referred to in the Russian army as Geran 1 and Geran 2. Delivered in immense quantities by Iran, they allowed to overload the Ukrainian air defence in a given area or at least a crucial consumption of very valuable missiles, which should destruct much more costly targets specified as Iskov Anders. This provoked the Ukrainian army to make mobile anti-aircraft patrols.