Scholar Olivier Roy describes the background of the hundreds of "global" (as opposed to local) terrorists who were incarcerated or killed and for whom authorities have records, as being surprising for their Westernized background; for the lack of Palestinians, Iraqis, Afghans "coming to avenge what is going on in their country"; their lack of religiosity before being "born again" in a foreign country; the high percentage of converts to Islam among them; their "de-territorialized backgrounds"—"For instance, they may be born in a country, then educated in another country, then go to fight in a third country and take refuge in a fourth country"; their nontraditional belief that jihad is permanent, global, and "not linked with a specific territory."