Almost all regimes in the Middle East (and even other Arab regimes) are having a very well relationship with Israel, even those who do not publicly do normalization of relations. Historically Israel (as well as the US.) supported these regimes to ensure its interest. Not many books written about that so far, but I recommend people to check William Blum's "Killing Hope", it studies a very similar case of supporting dictatorships by Israel's key sponsor (the United States).