Characterisation
As I said, I've considered writing something similar myself. The stuff going on right now makes for fascinating material. How does someone become radicalised? Is it politics, culture, "racism", leaders? Get inside a terrorists mind, their thoughts, make the MC feel genuine, and you have yourself a goddamn amazing piece of writing. And, for some strange reason, you've done the exact opposite.
Instead of a human, relatable MC with a complicated, twisted world-view, we have this shallow and superficial portrait of a terrorist, complete with melodramatic monologues that make me cringe a little.
It’s like shitty European purée, he thought. Take the worst aspects of every capital city in Western Europe, throw them together in a blender, and this is what you get. No identity, just the concentration of Europe’s oligarchical corruption and a millennium of race politics
Complain, complain, complain. Yeah, that'll humanise him, that'll make us care. Jesus. I don't even know who he is. Before the last paragraph, we don't even know he's a terrorist; the reveal, FWI, is more of a WTF than an actual twist. Not even DIRECT thoughts give the slightest inkling of what he's about to do. You're telling me this bastard isn't scared, angry, proud, or even happy? Establish his backstory quickly, preferably in the second paragraph, then use the first to hook us with Jihadi Bang Bang's plot to blow up the world.
Fuck Brussels. Fuck every single last person who has the misfortune to call this place their home. These soulless, status-enamored robots who can’t see past their fat wallets and white skin are lifeless drones wrapped in a layer of flesh. Fuck ‘em.
Yes. YES! Let's use another paragraph of direct thought. Should I establish MC's feelings and use this opportunity to write an emotional cord between reader and... Fuck no! Just have him complain some more. Complain, complain, lalalalal!
Story next...