Alright, admittedly it's a little awkward with Brody just left hanging and Carrie carrying his baby, but Quinn has been there for Carrie in many ways knowing this all along. He considered quitting over what she went through! They've always shared tension and he's a better match for her than the married, (dead) terrorist.
They call it the end times. What do you think the beheadings are about? The crucifixions in diya heifer and the revival of slavery. You think they make this shit up? It's all in the book. Their fuckin' book. The only book they ever read. They read it all the time, they never stop. They're there for one reason and one reason only, to dir for the caliphate and usher in a world without infidels. That's their strategy, and it's been that way since the seventh century, so do you really think that a few special forces teams are going to put a dent in that?