If Israel had never conquered the West Bank (Judea and Samaria) and Gaza Strip, if it were an island in the Mediterranean Sea, it would still face an Arab demographic threat.
While withdrawal from Gaza and most of the West Bank--with their Palestinian Arab population of between 2.5 million to 3.8 million*--may be necessary to maintain Israel's Jewish majority, it may well not be sufficient to ensure a Jewish state. That's because Israel's own Arab minority has been growing as a percentage of the country's total population, and continuing a process of "Palestinianizatio