It's always been about antisemitism. Push Jews out of the countries that didn't want them, and into the hands of a regime that was created to sew discord in West Asia, first to help topple the Ottoman Empire, and left there to ensure it stayed toppled (and lesser so to offset the millenia-old Persian Empire which, as we're seeing still has some fight left in it).
Maritime empires can project power far and wide thanks to their fleet of ships (at this point both air and sea). But a strong land based empire is always a rival that makes things difficult for them as the logistics of land empires allows for much more rapid movement of resources.
Britain's been fighting Russia on this basis for 500 years. It's why they resorted to the Opium Wars in China, because they were otherwise against the wall. And it's why they, and the US under their direction (since Wilson) have done the same in West Asia, particularly given both its impact on oil production and trade routes.
It's never been a religious war. But like most wars religion is absolutely a way to recruit and drum up cannon fodder. And leaving no safe space for deserters is a great way to keep your troops brainwashed and compliant.
It's part of why I really can't get behind a lot of the Jew hatred. I TOTALLY understand why Palestinians don't want to hear about how it's not all Jews and that people should live in peace. The trauma they've been subjected to by people in the name of this religion over the last century makes them the last people I have interest in lecturing. But from the outside, there is room to welcome dissenting Jewish voices (which get silenced in the occupied territory) rather than simply cast them all together.
A rabbi I lived with was the biggest catalyst for me taking seriously the situation in Palestine. It's important to remember that religion and cultural identity, despite often being used as a rhetorical tool to foment war and consolidate power, do not exist primarily for this purpose, any more than hair on your head exists so that you can be dragged by it.
