King Salman of Saudi Arabia (left) looks on as Sheikh Mohammed bin Rashid Al Maktoum (right), who is ruler of Dubai and also prime minister and vice president of the United Arab Emirates, is greeted by Saudi officials in Riyadh on December 9, 2015.
The emir of Qatar, Sheikh Tamim bin Hamad al-Thani:
The emir of Kuwait, Sheikh Sabah Al-Ahmad Al-Jaber Al-Sabah (left), with King Salman.