Sara Netanyahu, wife of Israeli prime minister Benjamin Netanyahu attends the lobby for encouraging Bible Study, at the Knesset, Israel's Parliament, January 31, 2017. Photo by Yonatan Sindel/Flash90

Sara Netanyahu, wife of Israeli prime minister Benjamin Netanyahu attends the lobby for encouraging Bible Study, at the Knesset, Israel's Parliament, January 31, 2017. Photo by Yonatan Sindel/Flash90

Israeli parliament member Yehuda Glick (L) and Sara Netanyahu, wife of Israeli prime minister Benjamin Netanyahu attend the lobby for encouraging Bible Study, at the Knesset, Israel's Parliament, January 31, 2017. Photo by Yonatan Sindel/Flash90

Israeli entrepreneur Yossi Vardi seen at the Cybertech Israel Conference and Exhibition, in Tel Aviv, attended by thousands of leading multi-national corporates, SMB's, start-ups, private and corporate investors, venture capital firms, experts and clients. January 31, 2017. Photo by Miriam Alster/FLASH90

Jacob Nagel, national security adviser in the Israeli prime minister's office seen at the Cybertech Israel Conference and Exhibition, in Tel Aviv, attended by thousands of leading multi-national corporates, SMB's, start-ups, private and corporate investors, venture capital firms, experts and clients. January 31, 2017. Photo by Miriam Alster/FLASH90

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. Photo by Abed Rahim Khatib/ Flash90

Abu Ubaida, spokesman of the Ezzedine al-Qassam Brigades, the military wing of the Palestinian Islamist movement Hamas, speaks during 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 Ddecember 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. Photo by Abed Rahim Khatib/ Flash90

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. Photo by Abed Rahim Khatib/ Flash90

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. Photo by Abed Rahim Khatib/ Flash90

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. Photo by Abed Rahim Khatib/ Flash90

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. Photo by Abed Rahim Khatib/ Flash90

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. Photo by Abed Rahim Khatib/ Flash90

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. Photo by Abed Rahim Khatib/ Flash90

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. Photo by Abed Rahim Khatib/ Flash90

Mayor of Haifa Yona Yahav and Prof. Ehud Keinan speak at a press conference at the Haifa municipality hall regarding a report on the dangers of an ammonia tank in the Haifa bay. January 31, 2017. Photo by FLASH90