All that has been achieved is ensuring that Hamas stays.
Now all Hamas needs to say it has defeated Israel is survival. If Hamas survives this attack they can claim they withstood Israel
Hamas support amongst the Islamic world and amongst the Palestinians itself was low yet people have rallied behind Hamas in this attack.
Why? Because despite the fact they hate Hamas. They would rather side with fellow Arabs over Israel as the Governments would and is getting it in the neck for not doing enough to stop Israel :/