The propaganda picture above could not possibly be the faces of people who have been 16 months without food, fresh water, medicine, fuel, displaced, etc, and claiming victory.
If Hamas is in complete control, it is only because Israel was not forceful enough to complete the job. Iran must be pleased because they supported, funded, and armed Hamas. Let see how much Iran has their backs by paying to rebuild Gaza, or will they have to depend on the West as usual?