Israel plays the constant victim. This is how they have passed the hat around the international community for decades. That strategy has since become defunct, but Israelis will never give the role up entirely. It is what they know best. The Israeli governent cashes in the Shalit capture and does not seem to try very hard to redeem Shalit. If Shalit were to dies in captivity, then this would be a bonus for the Israeli government, who would then think they have even better options to pursue. In Hetanyahu's eyes, Shalit is already dead.
Knesset passes 'Norwegian Law' allowing ministers to resign their seats, remain in cabinet (Haaretz)