A lucrative transaction involving the Trump family’s cryptocurrency firm and an agreement giving the Emiratis access to A.I. chips were connected in ways that have not been previously reported.
This summer, Steve Witkoff, President Trump’s Middle East envoy, paid a visit to the coast of Sardinia, a stretch of the Mediterranean Sea crowded with super yachts.
On one of those extravagant vessels, Mr. Witkoff sat down with a member of the ultrarich ruling family of the United Arab Emirates. He was meeting Sheikh Tahnoon bin Zayed Al Nahyan, a trim figure in dark glasses who controls $1.5 trillion of the Emiratis’ sovereign wealth.
It was the latest engagement in a consequential alliance.


