[JasonADrury]

Why should Israel have a right to exist? And under what parameters? Within which borders? Who gets citizenship?

Surely there's no moral case to be made for Israel having a right to exist in its current religious ethnostate form? People who presumably should have citizenship due to their ties to the land area are excluded because they believe in the wrong ancient delusions.

[dotancohen]

  > Why should Israel have a right to exist?

There are at least three basic answers to that question, depending upon one's worldview.

1. Israel does not have a right to exist, in fact no state has "a right to exist".

2. Israel has a right to exist because her citizens successfully defend her from those who wish her not to exist.

3. Israel has a right to exist because the UN declared it.

  >>> random.randrange(1,4)
  3

That's the tough one, but I'll answer under that worldview for the remainder of the reply...

  > And under what parameters?

Under the parameters established by her founders, and the UN, and those established by her neighbouring states.

From the Israeli declaration of independence:

  "WE EXTEND our hand to all neighbouring states and their peoples in an offer of peace and good neighbourliness"
  - https://en.wikisource.org/wiki/Declaration_of_Independence_(Israel)

From the neighbouring states:

  "No peace with Israel, no recognition of Israel, no negotiations with Israel."
  - https://en.wikipedia.org/wiki/1967_Arab_League_summit

Need I remind you that seven nations attacked Israel on the day of her independence? That attack caused a million and a half people to become refugees - both Arabs in the holy land and Jews in the rest of the middle east. It also moved the lines of control from the UN partition plan lines to the 1948 cease fire lines - which far favoured the Jewish state and extended in some places to the internationally recognised borders of Mandatory Palestine.

  > Within which borders?

Within the borders of the predecessor state, Mandatory Palestine, just like all other newly-established states (https://en.wikipedia.org/wiki/Uti_possidetis_juris). Had the Arabs founded an Arab state on the remaining lands of Mandatory Palestine then I would argue that Israel should be established only on the land allocated by the UN and the land lost by the Arabs in their failed war. But the Arabs never established a state there.

  > Who gets citizenship?

The people who live within the borders of the new state, and those whom the state determines are eligible for immigration. Just like every other state.

In other words, there is no reason to treat Israel any differently than any other state on the planet.