The simple truth is that they can't do it openly and quickly as this would have catastrophic consequences, both internally and internationally. Internationally,

The simple truth is that they can't do it openly and quickly as this would have catastrophic consequences, both internally and internationally. Internationally, they would become a pariah state for many decades. Internally, I think that Israelis are lying first and foremost to themselves about their real intentions towards Palestine. So they're wiping Palestine off the map in slow motion - building a settlement here and there, annexing a portion of territory, building a wall that transforms the remaining territory in a fractioned ghetto where life is impossible. If Israel had good intentions towards Palestine, they would establish a border once and for all, and promote, instead of opposing with every means, the constitution of a Palestinian state. But the very charter of Likud, the party in power in Israel, openly states (much as Hamas' charter does on the other side) that Likud "flatly rejects the constitution of a Palestinian state west of the Jordan river". You can't be much more clear than that.