Members of the Ezzedine al-Qassam Brigades, the military wing of the Palestinian Islamist movement Hamas, attend a memorial in the southern Gaza Strip town of Rafah on January 31, 2017, for Mohamed Zouari, a 49-year-old Tunisian engineer and drone expert, who was murdered at the wheel of his car outside his house in Tunisia in December 2016. 
The armed wing of Hamas said that the Jewish state was responsible for the murder in eastern Tunisia, of Mohamed Zaouari, described as a leader of the Islamist movement specializing in the development of drones. / AFP / SAID KHATIB        (Photo credit should read SAID KHATIB/AFP/Getty Images)