Oil barely garnered a mention from U.S. President Donald Trump during his glitzy visit to Saudi Arabia this week. But the black gold may explain why the trip went so smoothly.

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

Amazon, Google, and Nvidia are among those who struck deals during Trump's visit to the Middle East, his first major overseas trip of his second term.

He admired the marble in the Qatari palace as “perfecto” and “very hard to buy.” He praised the “gleaming marvels” of the skyline in Saudi Arabia. And he groused about the “much smaller” and “much less impressive” plane that is Air Force One.

As the Saudis work to impress Trump during his trip to Riyadh this week, they're focusing on even the smallest details—like his fondness for the Golden Arches.

The US president gets a "lavender-carpet" reception on a whirlwind visit of Gulf countries mainly focused on shoring up investment.

Although Trump recently attended the funeral of Pope Francis in Rome, Saudi Arabia was originally intended to be his initial overseas destination, just like in his first term. It served as a gilded debut for a foreign policy focused on securing cash infusions for American businesses.

President Donald Trump said Monday the tariffs against China would "go up substantially higher" than 145% if a longer-term trade deal is not reached before 90 days.