>>508447378 (OP)Israel as implemented in the late 1940s was intended to serve as an explicitly European Colonial project. The early debates as to the form of its government and such made certain assumptions about how the whole thing was supposed to take shape, with different factions assuming that a Communist, Atheist adaption of the Kibbutzim would form its basis, others holding to explicitly religious principles, and still others holding to secular but ethnic Jewish nationalism.
These factions hate each other. Likud, the Nationalist party (Lit. "Consolidated") began taking power in 1977, and the Iranian revolution gave them their ideal target for a permanent enemy to unify against. It has been sort of rocky since then, but you must understand that Israel is actually essentially a failed state, its left-wing elements despise Likud, and the religious orthodox elements exploit Likud's rules to live off the state and avoid military service. The only thing keeping them together is fear.
This is why despite all of the showmanship, Likud under Netanyahu have NO intention of destroying Iran, they need Iran. They will keep it around as a perpetually weak but threatening and bombastic punching bag to prevent the country from collapsing. This is why they haven't just killed Khamenei. Of course there are layers of graft involved here--it's also very profitable for them for example--but their intent is to keep Iran around, defanged but never quite killed, and to periodically stir up fear and even attacks to keep their own people in line.