I really don’t understand how it’s possible to interpret these numbers charitably:
A 2008 survey commissioned by the human rights group Gisha showed that [Israelis] were at once realistic and intransigent. Seventy-nine percent of the 600 Jewish respondents, a near-consensus, agreed that the closure [of Gaza] primarily harms civilians. Sixty percent worried that it would increase Islamic extremism, fully two-thirds (67%) said it hurt Israel’s image internationally. Nearly eight-in-ten (78%) said it would not bring down the Hamas. Despite acknowledging these failings, a broad majority of nearly two-thirds (63%) rejected easing the closure.
So according to these numbers, Israeli Jews believe that the blockade primarily hurts civilians, increases extremism, won’t hurt Hamas and damages Israel’s reputation abroad, but they still support it. If there’s another explanation than obstinate cruelty, I’d like to hear it.