the west is the only reason israel hasn't been sanctioned like north korea to be honest. the us or uk always veto all un resolutions against israel.  russia and china are most often in favor or abstain. the reason israel has to keep it's from doing a proper genocide is because there is a limit to how much can be hidden these days from the people and even the most pro israeli in the west don't like to feel responsible for dead kids.  but without the west all developing countries see themselves in palestine shoes. if it wasn't for us protection, vetos, money, us fighting israel strongest enemies in the region and providing weapons israel would be sanctioned like north korea or cuba if lucky or if unlucky it would go the way of rhodesia like most other colonial projects. and that is really not up for debate. if the west stopped support tomorrow within s month israel would start to be sanctioned by the un crippling it's ability to run a banking system as well as international trade and commerce for anyone that isn't it's direct neighbors just like the north koreans which are under un sanctions. foreign investments or bank account of israelis would be closed usually as part of the sanctions and doing business with israeli companies would risk fines.  i don't think anyone would have any doubts that in such a situation israel would have to comply with the un demands or go bankrupt. so it would mean giving up nukes, give up occupied territories, let politicians that committed war crimes be arrested and so on.  which israel could effectively afford to do of it had to. but it would still be surrounded by enemies which would likely still harass israel even if all the un demands are met as they care little for un sanctions.
Cambodia