Poor operation of Russia`s air defense system indicates the incompetence of the Russian command

When an aircraft is moving at low altitude, radar stations see it very poorly and only at the last moment when it approaches. If it was not detected, it means that the flying object moves along a complex trajectory and quite successfully bypasses the zones where it can be detected by radars, ”he explained.

С-400 ...By Соколрус - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=40082350...The 48N6E3 missile used by the S-400...By Vitaly V. Kuzmin - http://vitalykuzmin.net/?q=node/385, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=20108932