I could see Poland threaten to cut off support for Ukraine because of the grain situation, but when push comes to shove, I don't see them doing it. They detest Russia too much. They also are fully aware that they are among the next few countries on the list if Ukraine does lose. The government in Poland is already fairly far right. I suppose it could become more radicalized, but there is more room to move left than right.
Italy's government is pretty far right at the moment, but they are still supporting Ukraine. [...