SOUTH SINAI, EGYPT - MARCH 28: Egyptian President Abdel Fattah al-Sisi chairs the 26th Arab Summit in Sharm al-Sheikh, Egypt March 28, 2015. 26th Arab League Summit takes place from 28 to 29 March, with the current unrest in Yemen set to top the agenda. (Photo by Stringer/Anadolu Agency/Getty Images)
