The Russian president says it would "significantly change" the nature of the Ukraine conflict and amount to "nothing less than direct involvement of NATO countries".
The NATO long range missiles are dependent on (NATO) satalite intelligence, meaning the west provides targets to Ukraine. Also apparently the NATO provided systems take a while to learn, so NATO personell has to be mounting them. How this is not considered a direct involvement of NATO and a major escalation is beyond me. Fucken libs are gonna get everyone killed, just to make a nice dividend on their defense stock