Trump arrived in Riyadh, Saudi Arabia on Tuesday after a 15-hour flight for a four-day tour of the Middle East. Upon arriving, he was met by Saudi Crown Prince Mohammed bin Salman after disembarking from Air Force One before attending a Saudi-U.S. Investment forum.

Trump attended a meeting with the leaders of Bahrain, Kuwait, Oman, Qatar, Saudi Arabia and the UAE before traveling to Doha, Qatar, on his trip’s second leg.

U.S. President Donald Trump was set to meet Syria's president in Saudi Arabia on Wednesday following a surprise announcement that the United States would lift all sanctions on the Islamist-led government despite lingering concerns about its leaders' former ties to Al Qaeda.