They really are actual Nazis. Israel is just willing to look the other way for their own potential advantage, possibly in securing energy supplies from a nearby country, and one who's government is mostly just the US security state. Doubly so, if they think they can have significant political influence. They probably think they can manage it.

They're dead fucking wrong.

If you're not sure, listen to the Ukranian Nazis talk. Even they know the irony of a jewish state sponsoring them; but they have explicitly stated this is their best chance to basically run the government and build a National Socialist state. And, they're right. They have more legitimacy and popularity in Ukraine than at any time.

Don't forget, Hitler sold weapons and food to Stalin to secure his border, even while ranting about Judeo-Bolshevism, and how big of a threat the Soviet Union was. They even allied. Stalin genuinely didn't believe that Hitler would betray him. This isn't the first time NatSocs have played this game.