Secondly, we need to realize that Islamism is really disguised Arab nationalism. If you want to weaken the Islamists you need to point out to Moslems who are not Arabs (e.g. the Chechens and the Somalis and the Nigerians and the Afghans and the Indonesians) that they are being used by the Arabs to re-establish an Arab Empire, not a Moslem Empire. The Caliphate as envisaged by Al Qaeda and ISIS and the Muslim Brotherhood will be run by Arabs for Arabs.
If I understand you correctly:
Moslems are non-arab followers of Islam
Muslims are arab followers of Islam?
Never recognized a distinction.