Given that Russia directly, intentionally, and provably shot down a plane full of Dutch nationals, lied about it, and escaped major sanction let alone active war, I think it's fairly safe to say that an almost surely accidental airspace incursion almost surely caused by a technical error, of unclear national origin, that could have been from a presumptive ally, probably wouldn't have caused WW3 even if it landed in Berlin instead of Zagreb.
> Yeah. If that happened in Berlin, we'd have WW3 by now.
Had that happened in any other nation surrounding Ukraine that would have been the case, too; it's odd why they let that slip. Are we really to believe that if Serbia decided to attack again on some absurd notion of Russian loyalty or whatever they wouldn't defend Croatia despite being a NATO member?