Ukraine and Ukrainians are not the enemy in this war. Sure the Banderite Nazis are, but they are a minority that have taken the rest of the country hostage. The real enemy that Russia is fighting here is NATO. The goal is to defeat their proxy army and deplete the collective West's military and economic resources without completely devastating Ukraine.

The West would like nothing better than for Russia to completely eradicate everything in Ukraine. On their tally every dead Ukrainian is just as much a victory for them as a dead Russian. They know that at the end of the day, when this conflict is over, Ukraine and Russia will still remain brotherly peoples, no amount of Banderite propaganda can change that reality of kinship and historical cultural closeness.

This is why Russia needs to keep a cool head and respond to provocations like this only with actions that advance the overall military and geopolitical goal. If the grain deal no longer benefits Russia, it will be cancelled, but by that point it will be clear that its failure will have been entirely to blame on the West and their puppet regime in Kiev being dishonest actors and not abiding by its provisions.

Same goes for whatever deals are still in place for oil and gas. Let the Europeans commit suicide by continuing to sanction themselves out of a supply of oil and gas, that way it will be clear to the entire world who is a reliable business partner and who is not.