We probably should've seen that coming, right? Homeland wouldn't just introduce an attractive teenage boy and not have him be seduced by Carrie Mathison. The moment Carrie first spotted Aayan on that satellite camera surveying the corpses of his murdered family more or less started a countdown clock to when Carrie would be mouth-attacking him, and this week, that countdown hit zero. At this point, Carrie might not even be capable of sexual intimacy if it's not either self-destructive or necessary for a mission, but her seduction of Aayan is right up there with her stalking of Brody when it comes to over-the-top bad ideas to which Carrie has no qualms resorting. At its best, Homeland engages in what amounts to a game of chicken with audience sympathies. We know we want to see Carrie behave terribly in the name of righteous justice, but it's at the constant risk of going too far and rendering her wholly unsympathetic. Her seduction of Aayan is certainly one of the weirdest and most inappropriate things she's ever done, and that's saying something.
Aside from that agonizingly awkward scene, "Iron in the Fire" was an exercise in restraint.