Tariq - It may have 1.2 billion followers but in no way are those followers united. I have never seen the kind of insults or hate within religious sects as among this one. Sunni and Shia and Achmadi (didn’t spell that right, sorry) at each others throat and killing each other because they don’t see each other as “real” Muslims.
Even the example of the IRA is not a religious war. It was called that because part of the English mandate was to wipe out Catholicism in the areas of Ireland they control, but the root was English invading Irish lands and continues to be that.