The US says it has signed deals worth more than $350bn (£270bn) with Saudi Arabia as Donald Trump begins his first foreign trip as president.
The agreements included an $110bn arms deal, which the White House described as the single biggest in US history.
Mr Trump and his wife Melania were greeted in the Saudi capital by King Salman on Saturday morning local time.
The eight-day trip comes as Mr Trump faces uproar at home following his sacking of FBI director James Comey.
It will also take in Israel, the Palestinian territories, Brussels, the Vatican, and Sicily.
US Secretary of State Rex Tillerson said the arms deal was aimed at countering the "malign" influence of Iran.
"The package of defence equipment and services supports the long-term security of Saudi Arabia and the entire Gulf region," he told a news conference in Riyadh.
Mr Trump is accompanied on his visit by his daughter Ivanka, an unpaid White House adviser, and her husband Jared Kushner, a key member of the Trump administration.
Like British Prime Minister Theresa May and German Chancellor Angela Merkel on their recent visits to Saudi Arabia, Mrs Trump and Ivanka Trump did not wear...Read more...