Well, a Muslim, by definition, is the one who says the Shahada by faith: I bear no witness that there is no God but Allah, and Muhammad is his messenger. Now, Islamic terrorists are Muslims if they say the Shahada with faith, but they cause Fitnah, in other words, corruption.
Obviously terrorists aren't just Muslims; you have NATO and Israel who are terrorists.
Obviously terrorists aren't just Muslims; you have NATO and Israel who are terrorists.