I suppose that after WWI and the destruction of the Ottoman Empire, there was a certain period of dominance by the West, especially when they needed us to develop their oil fields for them. When Saudi nationalized the oil fields it probably marked the beginning of what seems to be the new rise of Islamic Supremacism. I prefer the term "Islamic Supremacist" (or Islamist) to the popular "Islamofacist" because I think their racism and xenophobia are more reminiscent of the KKK than anything else.
Let's forget all of this new age nitpicking about what to call these heretics. I'll stick with the terms that Belloc used, such as Moslem, Mohammedanism, and just plain Murderers.