Being in the discretion of the government doesn't mean that it cannot happen. Your statement was that to become a Israeli citizen you have to be a Jew, which I think is not true. It's not direct; it's hard; but it still is not impossible.
http://www.haaretz.com/jewish/shavuot/.premium-1.596678
"wo categories of intermarried couples face special challenges in Israel. The first is couples like Rona and Thomas, in which one spouse is not an Israeli citizen and – despite being married to an Israeli citizen –
is forced to undergo an arduous process and wait years to receive citizenship"
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Being in the discretion of the government doesn't mean that it cannot happen. Your statement was that to become a Israeli citizen you have to be a Jew, which I think is not true. It's not direct; it's hard; but it still is not impossible.
http://www.haaretz.com/jewish/shavuot/.premium-1.596678
"wo categories of intermarried couples face special challenges in Israel. The first is couples like Rona and Thomas, in which one spouse is not an Israeli citizen and – despite being married to an Israeli citizen –
is forced to undergo an arduous process and wait years to receive citizenship"