Thankfully it isn't. The war lasted for over a hundred years. In a strange twist of destiny, I ended up taking Ba Sing Se, but away from the Fire Nation, and returning it to the Earth Kingdom. It was a long time to create peace, but it was finally achieved. Aang and his companions brought peace to the world, and Aang was able to neutralize the Fire Lord, my brother without killing him. I believe that is what the world needed after a hundred years of war, something to stop the cycle of war and death, and show that other ways were possible.