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SOUTH SINAI, EGYPT - MARCH 28: (L-R) Secretary General of the Arab League Nabil al-Arabi, Egyptian President Abdel Fattah al-Sisi and Egyptian Foreign Minister Sameh Shoukry attend 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)

SOUTH SINAI, EGYPT - MARCH 28: (L-R) Secretary General of the Arab League Nabil al-Arabi, Egyptian President Abdel Fattah al-Sisi and Egyptian Foreign Minister Sameh Shoukry attend 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)