There is a huge difference - Ukraine is gifted with weapons. Israel actually purchases them. In fact, one of the reasons that the US has always wanted a ME conflict could be because it is good for our defense industry. And yes, the US does not, and should not sell weapons to anyone it doesn’t want to sell to. However, in the case of Israel, it has served its purpose to help remove the threat from south of Europe so we don’t have to protect Europe’s soft southern underbelly with our own troops.
The times are changing. The Muslims are in the Democratic Party now. They hate Israel. Therefore, we can no longer support Israel.