So, whilst I am more than willing to accept that Hamas leadership likes to spend its foreign aid on whatever the fuck it likes, I now am not quite so sure it’s a simple fait accompli.
Hamas doesn’t get any of the foreign aid. Per the occupation laws of Israel, all humanitarian aid monetary or otherwise goes through Israel and Israel supervises how it is distributed, it is then distributed to UNWRA (it’s why only Palestinians have their own UN refugee agency), and other international organisations like international Red Cross/Red Crescent. Israel also limits how much can be bought and sent into Gaza as aid- food, medicine, etc.
Hamas’ funds are covertly acquired and are from them levying taxes on the hapless Gazan residents. It’s like Mafia “protection money”…
It is why Hamas has decades old or homemade weapons.