[] Decline the truce. You're here to kill dragons and eat pigeon pie. And you're all out of fucking pigeons.
Considering this guy already tried to assassinate us I'm not inclined to let him try it again, additionally for burning Kings Landing he kind of deserves to die, and the golden company is kind of more trouble that it's worth, if we can kill them now that would make things much easier in future. We are also in a position where we have to kill Aegon, he tried to depose us and can raise an army, we have a far more powerful army and have him basically cornered the only way he can win at this point is using some dirty trick. Therefore, our best bet is to minimize the chances he has to try one and make this as quick and direct a fight as possible. Even if he does have hostages it's better that we don't know about them because regardless of who he's threatening our best bet would still be to kill him but Robb might not be able to go through with that if he knows he'd be sacrificing someone he cares about.