1st thought: It'd be better to spend your time on problems you might have a chance of solving. 2nd thought: When you've tried to solve other problems it hasn't gone well, so sure, waste your time on this.https://www.nytimes.com/2017/11/11/world/middleeast/trump-peace-israel-palestinians.html?_r=0 …
I think the SA change is genuine as well. But the Saudis don't control the Palestinians, and the US has long been a strong supporter of Israel (with different administrations varying somewhat). If US support for Israel was the key to lasting peace, it would've happened already.