That leaves Belarus or Kaliningrad or hopefully it was an S300 Ukraine fired at an incoming Russian Kalibr that missed which will ease NATO minds.but it is unlikely in the lines of the trajectory that it was fired from Russia but we’ll see.
I don't think so. Ukraine is taking the blame to avoid a major escalation by being the "bigger country" so to speak. Ukrainian surface to air S300s self destruct if they miss. NATO will still respond in a big way by cutting the sabotuers loose.Likely from Ukraine
WikipediaThe S-300 (NATO reporting name SA-10 Grumble) is a series of long range surface-to-air missile systems developed and operated by the former Soviet Union, now fielded by the militaries of Russia and Ukraine as well as several other former Eastern Bloc countries.