The following is Nov. 27, 2017 Congressional Research Service Insight report, Egypt: Terrorist Attack in the Sinai Peninsula
From the Report:
Terrorists based in the Sinai Peninsula have been waging an insurgency against the Egyptian government for more than six years. While the terrorist landscape in Egypt is evolving and encompasses several groups, Sinai Province (SP) is known as the most lethal. Since its affiliation with the Islamic State in 2014, SP has attacked the Egyptian military continually, targeted Coptic Christian individuals and places of worship, and occasionally fired rockets into Israel. In October 2015, SP targeted Russian tourists departing the Sinai by allegedly planting a bomb aboard Metrojet Flight 9268, which exploded mid-air, killing all 224 passengers and crew aboard. For U.S. policymakers, including Congress, continued terrorist attacks in the Sinai Peninsula raise concerns over Egypt’s stability, the security of neighboring Israel, the safety of U.S. military personnel serving as peacekeepers in the Multinational Force and Observers, and the growing capabilities of terrorist groups based in Egypt.