I can tell you two things: a) those are cool tats, no matter where they are.
Secondly, a lot of people from the West and post-Soviet bloc have come to join the Terrorists; would you believe, that there are British nationals and Europeans who are now fighting in Syria as a part of the Jihad? Here's another thing to notice: the main branch of the terrorists that's active in Pakistan (we're the kitchen for terrorists, we've all things in the mix, yaye us!) are the Salafists/Wahabists that believe in sectarian clensing: anti-Shia/Hazara movements; this trend has been noted as far back as 2004.
I would like for you to know another thing in
Who Becomes a Terrorist and Why , it was seen that many populace which came into the fold were told to have 'Westernised' exteriors, to allow a better blending in. The chief technical terrorist of the 9/11 attack was a Turk with a German girlfriend (non-Muslim). Many senior members of the Al-Qa'ida were deliberately directed to assimilate 'culture' (Al-Qa'ida Handbook, p. 34), that would include having tats, drinking beer, maybe watching Simpson.
That explains the repeated ethnic diversity that's been seen in busted terrorist cells all around the world from Europe to Pakistan check this out:
http://link.springer.com/chapter/10.1007/11427995_24
Now you're going to reply about a grand conspiracy perhaps, I give you the benefit of the doubt but then produce some evidence from credible sources (academic articles, empirical proofs, and so on please no Zaid Hamid).
Toodles.
PS Iran has been the target of Salfists as well, considering you know they're Shias.