From my weak understanding, it’s the only ally the west (USA) has in the Middle East, so they’re important strategically - for military bases and other reasons I don’t really understand, and so are propped up by financial aid and weapons and other help (intelligence etc?) beyond what would normally happen to a similar country.
The US has several allies in the middle east. Egypt, Jordan, Kuwait, Bahrain, and Qatar all have major non-NATO ally status with the US, the same status as Israel. Jordan in particular is a very close US partner.
I should add, none of these countries are treaty allies of the US, i.e. none of them have a mutual defense treaty with the US. The one country that is a treaty ally of the US in the region is Turkey, though that relationship has been strained in the last couple of decades