"... the CIA, concerned about the factionalism of Afghanistan [...] found that Arab zealots who flocked to aid the Afghans were easier to "read" than the rivalry-ridden natives. While the Arab volunteers might well prove troublesome later, the agency reasoned, they at least were one-dimensionally anti-Soviet for now [circa 1989]."
Translation:
"Oh yeah, we know he's a psychopathic religious zealot with really wacked-out attitudes, but he's young, stupid and not mad at _us_ right now..."
And they have the fucking nerve to imply it's Canada's fault for their own lame-ass border security letting them in.