The “radical” term is a diversion. All muslims are “triumphalist” or “supremacist”, and that universal attitude is what fuels the so-called radicals.
I agree, and it bothers me to see writers not facing up to the fact these Muslims who want us killed are following the basics of Islam as Muhammad's examples show.
Our problem is fundamental Islamists, and not "radicals" or "extremists", and using those words just diverts the problem from Islam itself. -Tom