President Donald Trump arrived in Riyadh on Tuesday to a royal-purple-carpet rollout and a motorcade ride ensconced by a calvary of Arabian horses – a daylong kickoff to the first major international trip of his second term.

Before Trump began his visit to Saudi Arabia, Qatar and the United Arab Emirates, his sons Eric and Donald Jr. had already traveled the Middle East extensively in recent weeks. They were drumming up business for The Trump Organization, which they are running in their father’s stead while he’s in the White House.

RIYADH, Saudi Arabia (AP) — U.S. President Donald Trump opened his four-day Middle East trip on Tuesday by paying a visit to Saudi Arabia’s de facto ruler, Crown Prince Mohammed bin Salman, for talks on U.S. efforts to dismantle Iran’s nuclear program, end the war in Gaza, hold down oil prices and more.

President Donald Trump’s first overseas trip in his second term took him back to Riyadh, Saudi Arabia, where he spoke about the bright economic future of the Middle East and the United States.

President Donald Trump signed a $600 billion agreement with Saudi Arabia on Tuesday that includes a major defense contract and substantial investments in artificial intelligence—as U.S. business executives made their own set of deals at a conference in the backdrop of Trump’s visit to Riyadh, the first stop on his four-day tour of the Middle East.