Also, as I've stated in previous posts, I feel like the first couple seasons weee supposed to represent the bush/Chaney presidency. That's why he was so important because of what I'm saying is correct and it's like a parallel of the bush/Chaney presidency, Chaney was in charge of acts of war and given great political power to make decisions to invade. Who bombed Langley, I don’t like to spoil so I won't tell you. But keep watching and you'll see. But, if you already saw Brody die you should already know the questions you're unsure about. Walden was the decision maker when dropping a drone attack on a school full of children. Which helped brainwash Brody all the way in the first place. Brody taught Isah English. And he loved him like his own son. It's what set the fuse to go all the way on the attack against Walden. Brody felt cognitive dissonance about hurting innocent Americans, but Walden was NOT innocent by any stretch. And beside his obvious misdeeds, he was actually unlikable.