I thought to myself, multiple times, "I cannot believe that characters trying to arrange meetings with bankers and lawyers can be this thrilling." This viewing was hamstrung by a shitty blu-ray disc that took probably two minutes off the runtime in skips (including some crucial scenes), so it had me bouncing back and forth between the film and its own Wikipedia page, but I still had a hell of a time.
It's a challenging film, so subtle in its condemnation of its protagonist's Islamophobia that there were times when I couldn't believe the praises I've heard for it. But the criticism is there.
Overall it's a tightly-wound, cunningly shot thriller that will probably reward repeat viewings. It's not on the level of Tinker, Tailor, Soldier, Spy, but I'm still glad I watched it.