The deal features a mix of public and private partnerships, a strong emphasis on emerging technologies, and a $142-billion arms deal.

Trump is again diverging from U.S. presidential habit by choosing the Middle East, not Canada or Mexico, for the first foreign trip of his second term. He's hoping to do deals with three of the region's wealthiest countries.

Donald Trump visits Saudi Arabia this week, 80 years after President Franklin D. Roosevelt laid the foundations of longstanding Saudi-U.S. relations based on an ironclad arrangement - the kingdom pumps oil,