28. Zuko was devastated when he was told of the extent of Azula’s mental illness. He asked the 4 nations to sign a treaty ensuring that in the event of war, no child under the age of 18 be allowed to participate in any way, shape or form, regardless of political station. It was one of the only things the countries readily agreed on and ratified immediately. In the Fire Nation, the treaty was called Azula's Law.
Got headcanons about the Avatar series? Send ‘em our way!
I don’t think he would do this just for Azula’s sake - he and the Gaang would have plenty of nightmares about the war even well into their adulthood. I mean you don’t just fight in a war and come out unscathed. He and the Gaang would have wanted to make sure that no other child would have to suffer the way they did.
The Earth Kingdom would have been pretty pissed about Azula but once they realised that she was only 15 and mentally unstable, Zuko would have been able to calm them down and get her proper treatment.