Why isn't your all omnipotent allah improving the lot of his people, the pals? Why has he allowed Israel this 'devastating power' whilst denying it to the pals?
Thanks for pointing out what certainly appears to be a flaw in much Muslim interpretation of the Qu'ran: If all that happens is by the Will of Allah - then how is it Allah could will that the people of Mohammed be 'oppressed' by anyone else?
The classical answer is that no merely human power could oppose the Divine - and so 'The Devil makes them do it'.
That of course doesn't take into account world politics or weapons technology......
A non-theological assessment would acknowledge that the other Arab nations are fed up with the HAMAS/Hezbollah SHIT and don't want 'em anywhere near their own nations, and are quite happy to watch the Israelis tear up Gaza trying to destroy HAMAS. In fact, most of 'em are provately CHEERING the destruction even as they publicly weep copious crocodile tears over their 'poor persecuted Palestinian brethren' - whom they import as non-citizen 'guest workers' little better than slaves. Because they can.
The Syrians and Iranians are DELIGHTED - they get to see dead Jews on TV *AND* use the Gaza fighting as a massive distraction from their own oppression of their own citizens. I bet we can add Qutar, Bahrain, and a few other States to that list, too....
The Turks are snickering, because they can sneer at EVERYONE - while knowing this'll distract folks from taking them to task over the Armenian genocide while the clock runs out and the last survivors die.....
The Russians can piously express dismay, while being relieved that this distracts everyone from noticing their support of Iran/Syria: they are too short-sighted to see what they're about to reap along their southern border with all those Islamic-stans!