A still from Haret al Yahood. Haret al Yahood hide caption

itoggle caption Haret al Yahood

Some 800 migrants from the Middle East arrive at the Greek port of Piraeus on Sunday. Smugglers are charging thousands of dollars to take migrants across the Mediterranean, and prices can vary widely. Children are often allowed to travel for free. Anadolu Agency/Getty Images hide caption

itoggle caption Anadolu Agency/Getty Images

Egyptian security forces take up positions during anti-government demonstrations in Cairo last November. Egyptian activists have been disappearing in growing numbers, and human rights groups say they believe the security forces are responsible. Amr Sayed/APA\Landov hide caption

itoggle caption Amr Sayed/APA\Landov

An aerial view of the Grand Mosque in the holy city of Mecca in October 2014. Muhammad Hamed/Reuters/Landov hide caption

itoggle caption Muhammad Hamed/Reuters/Landov

Earlier this month, Mohammed bin Salman, Saudi Arabia's new deputy crown prince, met with Egyptian President Abdel Fattah el-Sissi in Cairo. Egyptian Presidency Handout/EPA /Landov hide caption

itoggle caption Egyptian Presidency Handout/EPA /Landov

Saudi Arabia's army fires artillery shells toward Houthi rebels along the Saudi border with Yemen on April 15. Outside Saudi Arabia, many are critical of the military campaign and question whether it will succeed, but it is popular inside the kingdom. STR /Reuters/Landov hide caption

itoggle caption STR /Reuters/Landov