India, March 28 -- At a recent Saudi Arabia-backed investment forum, US President Donald Trump sparked an awkward moment for Saudi officials when he appeared to mock Crown Prince Mohammed bin Salman during his address. Trump said officials should tell the Crown Prince to 'be nice' to him, before using a crude remark suggesting that the Saudi leader had underestimated him.

"He did not think this was going to happen. He didn't think he would be kissing my a**. he thought I would be just another American president of a country going downhill. But now he has to be nice to me," Trump said in comments that have since gone viral.

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He later struck a more conciliatory tone, describing Mohammed bin Salman as a 'sm...