Saudi Arabia’s Crown Prince Mohammed bin Salman has to “knock it off” in his feud with the UAE, Republican Senator Lindsey Graham said on Friday, picking a side with one US Gulf ally over another in a rift that has echoed across the Middle East. “Knock it off Saudi Arabia, knock it off. I’m tired of this crap. MBZ is not a zionist and you are emboldening Iran by having this conflict,” Graham said at the Munich Security conference on Friday evening. MBZ is the acronym for UAE leader Mohamed bin Zayed. Graham appeared to be particularly upset with criticism...