Saudi King Salman bin Abdulaziz (R) meets with Kuwait's Sheikh Sabah al-Ahmad al-Sabah during the Gulf Cooperation Council (GCC) summit in Riyadh on May 5, 2015. The GCC summit came amid mounting international concern over the Saudi-led air war on Shiite rebels in Yemen, the threat from jihadists and Gulf worries over their Shiite rival Iran. AFP PHOTO / FAYEZ NURELDINE (Photo credit should read FAYEZ NURELDINE/AFP/Getty Images)