In the Russian Empire Jews could only live at the border territory. Many of the soviet Jews were born in the Ukraine and in the Belarus. Idish was one of four state languages of the SSRB (Soviet Socialistic Republic of Byelorussia) (russian, belarussian, polish, idish).

The first president of the Israel and 3 Israeli prime ministers were born in Belarus.

Also there are many terrorist acts in Israel, so they have experience in such things.

Pale of Settlement - Wikipedia, the free encyclopedia
List of Belarusian Jews - Wikipedia, the free encyclopedia
History of the Jews in Belarus - Wikipedia, the free encyclopedia