It's Middle East. It is always about power and alliances.
Frankly, so is all the world. Everyone loves waving their little "justice and democracy" tropes, even guys like Erdogan. For US - it's their favorite passtime too.
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First of all Bibi is not "my precious" - I voted for his opponents and I lost fair and square, 4 times and counting.
Secondly, paint me surprised, US leaders cuddling their dictators, not first and not last, buddy. 3/4 of the Middle East is dictatorships of some kind and sort, does not prevent US and the World smiling and making deals and selfies with them, so don't try to make it a "Trump thing".
Suddenly US woke up and realized SA is a dictatorship? This can't be troooooo????? Obama, Bush and so on - all happily cut deals with them and others just fine and nobody batted an eyelash.