A government official and top royal from the United Arab Emirates purchased a $500 million stake in the Trump family's cryptocurrency venture last year, months before the Trump administration greenlit the sale of advanced AI chips to the UAE, The Wall Street Journal reported on Saturday. Sheikh Tahnoon bin Zayed Al Nahyan — also known as the "spy sheikh" — is the Gulf nation's national security adviser and manager of its largest wealth fund. Aryam Investment, a Tahnoon-backed company, took a 49%