The irrevocable Islamic and Koranic injunction upon all Muslims is to wage relentless war against any non-Muslim nation state that exists within what Islam decrees as the Dar al-Islam (the House of Islam). Wherever the Muslim foot has trod triumphal in the name of Allah, that territory is considered eternally Islamic land. If it is lost, then it enters the Dar al-Harb (the House of War) and must be retaken and the population either forcibly converted to Islam, forced into dhimmi degradation, or exterminated.
According to Abraham I. Katsh, who wrote the following as far back as 1954 in his book, Judaism and the Koran:
“The duty of Jihad, the waging of Holy War, has been raised to the dignity of a sixth canonical obligation … To the Moslem, the world is divided into regions under Islamic control, the dar al-Islam, and regions not subjected as yet, the dar al-harb.
“Between this area of warfare and the Muslim dominated part of the world there can be no peace. Practical considerations may induce the Muslim leaders to conclude an armistice, but the obligation to conquer and, if possible, convert never lapses. Nor can territory once under Muslim rule be lawfully yielded to the unbeliever. Legal theory has gone so far as to define as dar al-Islam any area where at least one Muslim custom is observed.
“Thanks to this concept, the Moslem is required to subdue the infidel, and he who dies in the path of Allah is considered a martyr and assured of Paradise and of unique privileges there.”
It is not only Israel, the Jewish state, that is to be warred and aggressed against by the followers of the “religion of peace” but all lands that have been lost to erstwhile Muslim invasion and occupation: They include Spain, Portugal, Sicily, parts of France and Italy, Hungary, Austria, the Balkans, Greece, southern Russia, India—all lands considered to be in the Dar al Harb. And the Islamic war is against not only Christians and Jews, but Hindus, Buddhists, Bahai, and all non-Muslim faiths or those who have no faith.