Russia would have apologised immediately and made it clear this was a stray missile. This has not happened to date.
Why would Russia be aiming for targets so close to the border in the first place, knowing the potential outcome? Russia may have a rag tag army that is depleting by the day, but they are not that incompetent and stupid. They knew what they were doing.
The timing is too much of a coincidence. I don't believe in coincidences of this nature. Russia is humiliated on the world stage and suddenly Poland is bombed.
There is no way this would be Ukraine, they have by far the most to lose if Nato get involved and this escalates even further.
Yes great minds will play it down, for sure they will say it was an accident - and will collude with Russia, but that doesn't make it any less dangerous. An escalation is an escalation even if we pretend it is not, and decide to look the other way and hope it doesn't happen again. Which it will.
We are in the end game officially. The most dangerous stage of any war.