One of the two allegedly al-Qaeda-linked suspects recently charged in Canada with plotting to target a Toronto-to-New York train had previously faced a deportation hearing, and his refugee claim was rejected because he had already racked up five fraud convictions during his short stay in Canada. He managed to obtain residency by arguing that as a "Palestinian by blood" (despite being born in the United Arab Emirates), he had no home nation to which he could be deported.
4. Western nations have been far too quick to distribute citizenship and its accompanying privileges like candy as a matter of official policy, ignoring potentially problematic ideology in favor of superficial values like "diversity."
As a result, some Russian immigrants aren't recognized as Islamists but rather just "ethnic Chechens," as was the case with the Boston bombing suspects and also with a Canadian citizen of Chechen origin who was among the leaders of an attack that killed several dozen hostages at an Algerian gas plant earlier this year.
5) There's a general lack of understanding of terrorists and the nature of their allegiances. Basically, they have none. They'll work with anyone who will serve their objectives today, then double-cross the same allies tomorrow. Anyone projecting any morality onto their alliances will end up confused at best and dead at worst.
Take Syrian al-Qaeda, for example: Jabhat al-Nusra. Its members loathe the West and Israel as much as Hezbollah does. However, they're fighting against Assad along with the West, and actively attacking Iran-backed, Assad-supporting Hezbollah. It's this kind of convolution that recently made some Canadians ask, "Why would al-Qaeda-linked suspects in Canada wanting to blow up a train allegedly be getting funding from al-Qaeda in Iran when Iran is Shiite and al-Qaeda is Sunni and those two hate each other? This is obviously nonsense!" Right -- because Iran has never funded al-Qaeda against Western interests before.
It helps to remember the terrorist golden rule: Every one of these groups just wants to be in charge. And they will try to knock off any and all other parties systemically until that happens. Go ahead -- just try wedging reason, diplomacy or integrity into that.
Still, some will try -- at our collective peril.