The missile that fell on a Polish village seems to have been an accident. That doesn't erase Russia's ongoing responsibility for the millions of people suffering because of a stupid and brutal war:
https://www.theatlantic.com/ideas/archive/2022/11/missile-explosion-poland-russia/672134/
What Really Caused the Missile Explosion in Poland

The disturbing incident was the direct consequence of Russian aggression.

The Atlantic
@anneapplebaum Even if it was a defence missile from Ukraine, it's Russia's responsibility that it is necessary to use such weapons.