OK, I see how the reference was to recent Ukrainian training accidents.
Perhaps NATO is allowing Ukrainian pilots in training to fly into Ukraine for purely defensive missions, to shoot down cruise missiles. Interdiction rates seem high recently.
If that's what he is referring to, then OK. However, I would not consider them to be mysterious circumstances.
BeauBo: "Interdiction rates seem high recently."
F-16s with Aim-120Ds and Aim-9Ms are (or will be) a great addition to Ukraine's arsenal.
The Mi-8 collision was a combat mission, Juice was an F-16 training mission