your life, it impacts mine

He is just so good in that scene. I can't find any gifs in the gif search, but his face just contains every single drop of the pain and trauma he's undergone, hunted and tortured and manipulated and even raped, all for this knowledge he never wanted to be used as a weapon. He's been pushed to destroy Peacekeeper and Scarran bases, the latter by using the worst weapon humans had ever managed to develop on Earth. Innocent people have died because of the need to protect this knowledge these two galactic superpowers are desperate to obtain. Some he knew by name - Crais, Talyn - but some just happened to be in the proximity on the bases, including the children of soldiers.

And he is just done. Everything has been for nothing, because now he's showing them what they all think they want, and hey, big surprise, it's something no one should have, just like he's always said. And more people are dying, even as they all watch, and there's nothing even he can do to stop it until they all agree to stop the war. And that will be on his shoulders for the rest of his life.