There’s a helpful analysis of the situation in Gaza at Thinking Faith: the online journal of the British Jesuits. I’ll cut straight to the conclusion
It is highly unlikely that the Israeli war against Hamas can completely destroy the movement. However much it may be possible to limit the paramilitary capabilities of the organisation, the civil casualties and levels of destruction will further embed opposition to Israel within Gaza, and more widely among Palestinians in the West Bank. It will also result in much more widespread anti-Israeli and anti-American radicalisation with unpredictable consequences.
There have been many major conflicts involving the establishment and consolidation of the State of Israel, including 1946-8, 1956, 1967, 1973, 1982-5, two intifadas, and Lebanon in 2006, but the Gaza War of 2008-09 may end up being the one conflict that finally makes it clear that sustainable security for Israel cannot be achieved by the intense use of military force.
That’s the point I keep coming back to. There’ll never be any sort of military solution to the situation in Israel-Palestine. And sooner or later, however repugnant it might be, the different factions are going to have to talk to one another. The talking shouldn’t start when the atrocities (committed by all sides) stop and good faith is shown. It’s talking that will bring this conflict to an end.