U.S. Secretary of State Mike Pompeo and his wife Susan disembark from their plane as they arrive at Abu Dhabi International Airport in Abu Dhabi, United Arab Emirates, January 11, 2019. Andrew Caballero-Reynolds/Pool via REUTERS

U.S. Secretary of State Mike Pompeo lands in Riyadh, Saudi Arabia January 13, 2019. Andrew Caballero-Reynolds/Pool via Reuters

U.S. Secretary of State Mike Pompeo is greeted by Bahraini Foreign Minister Khalid bin Ahmed Al Khalifa after arriving at Manama International Airport in Manama, Bahrain, January 11, 2019. Andrew Caballero-Reynolds/Pool via REUTERS

US Secretary of State Mike Pompeo's plane waits on the tarmac before his departure from Abu Dhabi International Airport, in Abu Dhabi, United Arab Emirates January 13, 2019. Andrew Caballero-Reynolds/Pool via Reuters

US Secretary of State Mike Pompeo speaks with the Emirati Ambassador to the US Yousef Al Otaiba at the NYU Abu Dhabi campus in Abu Dhabi, United Arab Emirates January 13, 2019. Andrew Caballero-Reynolds/Pool via Reuters

Abu Dhabi's Crown Prince Mohammed bin Zayed Al-Nahyan welcomes U.S. Secretary of State Mike Pompeo during a meeting at Al-Shati Palace in Abu Dhabi, United Arab Emirates January 12, 2019. Andrew Caballero-Reynolds/Pool via Reuters

U.S. Secretary of State Mike Pompeo meets with Saudi's Minister of State for Foreign Affairs Adel al-Jubeir upon his arrival in Riyadh, Saudi Arabia January 13, 2019. Andrew Caballero-Reynolds/Pool via Reuters

U.S. Secretary of State Mike Pompeo poses for a photo with Vice Admiral James Malloy (L) Commander, US Naval Forces, U.S. Central Command/Commander, US 5th Fleet, Combined Maritime Forces before taking a tour of the US Naval Forces Centeral Command center in Manama, Bahrain January 11, 2019. Andrew Caballero-Reynolds/Pool via REUTERS

US Secretary of State Mike Pompeo (R) speaks with Steve Bondy, US Embassy Charge d'Affaire before his departure from Abu Dhabi International Airport in Abu Dhabi, United Arab Emirates January 13, 2019. Andrew Caballero-Reynolds/Pool via Reuters

Saudi Arabia's King Salman bin Abdulaziz meets with U.S. Secretary of State Mike Pompeo in Riyadh, Saudi Arabia January 14, 2019. Andrew Caballero-Reynolds/Pool via REUTERS

Abu Dhabi's Crown Prince Mohammed bin Zayed Al-Nahyan speaks with U.S. Secretary of State Mike Pompeo, who is accompanied by U.S. Special Representative for Iran and his Senior Policy Advisor Brian Hook, during a meeting at Al-Shati Palace in Abu Dhabi, United Arab Emirates January 12, 2019. Andrew Caballero-Reynolds/Pool via Reuters

U.S. Secretary of State Mike Pompeo is greeted by Saudi's Minister of State for Foreign Affairs Adel al-Jubeir in Riyadh, Saudi Arabia January 13, 2019. Andrew Caballero-Reynolds/Pool via Reuters

U.S. Secretary of State Mike Pompeo (L) meets with Saudi Crown Prince Mohammed bin Salman in Riyadh, Saudi Arabia January 14, 2019. Andrew Caballero-Reynolds/Pool via REUTERS