Tony's words sting and Thor knows it's because some of them ring true. He has been selfish -- tremendously selfish -- asking Tony to tolerate Loki, and he knows that Tony has done more than most people would have in the same situation. And maybe he's been self-absorbed, wallowing in his own pain, but there's one thing that he can't let go of --

"You want to stop Thanos?" he asks. "You start by making up with our friends. You start by not keeping secrets because we can't afford to keep any."

Thor takes a breath. He knows that he's calling Tony out on this, knowing all the while that he has his own secrets he's keeping from him. Secrets that Tony doesn't have the benefit of discovering through pre- or post-cognition.

But Thor forces himself not to think of that.

"I would go to war for you, Stark," Thor tells him. "But I can't do that if I don't have all the facts in front of me."