A substantial portion of Aliyah from ex-Soviet states is composed of people with very tenuous (if any) links to Judaism or Jewish heritage.
They are the result of the Jewish Agency in the 1990's, in its desperation to stay in business bring immigrants to Israel, adopted the definition of who is Jewish "according to Hitler" rather than "according to Jewish law" and imported a huge mob of Russian anti-Semites to conteract the Arab anti-Semites.