Except a lot of terorists aren't Arabs. They're Albanians, Chechens, Indonesians, South "Filipinos", Iranians, Pakistanis, Afghans, Kashmiri and Bosnian muslims, etc.--in other words, non-Arab muslims!!!
We can now add to that list the numerous converts to islam from Britian, the US, Australia, and undoubtedly from other countries, who seem to be attracted to Al Qaeda and other islamic terrorist organizations.
In other words, over 95% of terrorists in the world are muslims!!!! And nearly 100% of international terrorists (as opposed to terrorists whose interest is confined to changing things in only one country or region, like the IRA and the Basque ETA) are muslims!!!!