Event: Tyrion Lannister - Convincing Argument (Political Wins)

Episode 6: The Iron Throne at 46:35
Tyrion successfully deflects Grey Worm from discussing his fate by dangling a juicy power struggle in front of the Lords of Westeros instead.

Grey Worm: "You are not here to speak! Everyone has heard enough words from you."
Tyrion: "You're right. And no one's any better for it. But it's not for you to decide. Jon committed his crime here. His fate is for our king to decide. Or our queen."
Lord Royce: "We don't have a king or queen."
Tyrion: "You're the most powerful people in Westeros. Choose one."
(Convincing Argument)