From BWZ's link in post 2411:
...Five months into the war, Russian air forces have failed to establish air superiority over Ukraine. Shoulder-fired anti-aircraft missiles, formally called man-portable air defense systems, or MANPADS, fired by Ukrainians have downed dozens of Russian military airplanes and rotorcraft. Longer range systems have kept Russia's manned strike aircraft out of the western part of the country and forced them into the MANPADS envelope near the front lines. Now, with NASAMS and IRIS-T SLM both set to arrive at some point, these numbers are likely to go up, or the effectiveness of Russian air power will continue to erode due to a lack of access to defended areas....
That is a great link. Among many items of interest, love the video of Ukrainians using commercial drones to drop homemade bombs made from soda cans on the Russian enemy.