The Israeli government never needed to occupy the West Bank or Gaza, or to reinvade Gaza now or to be involved in what everyone knows is a fight to ethnically cleanse both areas- which is something I assume you would agree that country has no right to do.
It isn't possible to end the conflict by crushing the Palestinians and humiliating their leaders by making them "surrender".
Why defend what hasn't worked at all since 1967?
Why defend what never needed to be done?