King Salman bin Abdulaziz of Saudi Arabia (right) meets with Sheikh Mohammed Bin Rashid al-Maktoum, ruler of Dubai, during the Gulf Cooperation Council summit in Riyadh on May 5, 2015. (Photos by FAYEZ NURELDINE/AFP/Getty Images)
Sheikh Tamim of Qatar (below, left) with King Salman.
Sheikh Sabah of Kuwait (below, left).