Slavs have almost nothing to do with modern Israel. Swedish, Norwegian, and Danish folks barley made up any people who converted to Judaism in the mid century. Most of those people were Ashkenazis form modern day Ukraine, Russia, and some parts of Azerbaijan, Turkey, Poland, etc. They were a Turkic-related people.
Slavs are a completely different group. And Germans are not Ashekanazis either, but they had a big role to play in modern Israel.
Ashekanazis are the major cause of the mess of the world today - leading Ukraine and Israel. Israel is the world's first true Eastern European Colonial empire as they never had colonial territories like the Germans and West Europe did.
The Slavs are actually quite tolerable. Norwegians are not too bad and stand on a decent footing. A lot of Pakistanis there, too.