Why was the Russian air defense failed when the Ukrainian Mi-24 helicopter attacked Belgorod?

The Russian air defence forces faced heavy criticism after the Ukrainian Mi-24 helicopter fleet successfully attacked the Belgorod fuel storage. On April 1, the Ukrainian Mi-24 helicopter fleet quietly crossed a long distance and attacked the petroleum depot in Belgorod without being detected by the  Russian air defense. Immediately after the attack, many questions were … Read more