Christianity, whose presence in the Middle East predates Islam’s by 600 years, is about to be cleansed from the Middle East. Egyptian Copts may have found some respite under Abdel Fatah al-Sissi, but after their persecution under the previous Muslim Brotherhood government, they know how precarious their existence in 90 percent Muslim Egypt remains. Elsewhere, it’s much worse. Twenty-one Copts were beheaded by the Islamic State affiliate in Libya for the crime of being Christian. In those large swaths of Syria and Iraq where the Islamic State rules, the consequences for Christians are terrible — enslavement, exile, torture, massacre, crucifixion.