Not even ISIS wanted this loser, which is not at all surprising.
There have always been great numbers of these damaged, useless losers who couldn’t integrate into productive society and lashed out violently against the world they couldn’t join peacefully and creatively.
The Spanish Empire, for instance, purged itself of its freaks by exporting them to the Americas where they killed, raped, and tortured in the name of God. The world has shrunk since then, so it’s harder not to notice the freaks. Plus, they join their communities of losers online.
There doesn’t seem to be any way to ensure that we, the normal, productive people, don’t come into contact with ugly creatures like this Tashfeen.