That's a losing argument, my dear.
In using the Just War Theory to evaluate Israel’s occupation, we can distinguish between two of its actions: the initial military advancement into the West Bank during the 1967 War, and the ongoing occupation after the war officially ended. For the sake of precision, this analysis will focus on the West Bank alone, apart from the other territorial occupations of Gaza or the Golan Heights. This analysis will also take as granted the sovereignty of Israel’s pre-1967 borders, even though many Palestinian refugees maintain valid land-claims within that territory. When evaluating Israel’s transgression of those borders according to Just War Theory, this analysis finds that Israel was morally justified in its initial wartime occupation of the West Bank, but is not morally justified in its continued occupation of that land and its people.