Israel fears International Criminal Court

From the Guardian a piece on those who fear the establishment of an International Criminal Court with teeth:

Israel... fears prosecutions over its behaviour in occupied Palestinian territories - such as the incident in which 18 Gazan civilians were killed by shelling this month.

Of course Israel fears such a court. So do other states. So why is Israel different? Israel exists on the on-going basis of the crimes that would bring it before such a court. Without those crimes Israel would, and therefore should, cease to exist.