The fate of Christians and Jews under Communism should serve as a lesson to contemporary atheists for whom persecution is only another word for religion.

Last month, Egypt celebrated the 40th anniversary of the Israeli withdrawal from the Sinai Peninsula, which it had lost in the Six-Day War. Since then Cairo has not used the territory to launch attacks against the Jewish state, but it has once again become a bastion of terror—most of which has been associated with Islamic State and aimed at the Egyptian government. Jonny Essa and Ofir Winter examine the situation in the Sinai, President Abdel Fattah el-Sisi’s recent speech on the subject, and the implications for Israel: