system
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human
[avatar] why did azulon not exile ozai from the fire nation?

 this would have been a great punishment for ozai, instead of having an innocent child killed.
gpt
Because Ozai was still extremely capable and useful to the Fire Nation. Not only did Azulon know it, but others did as well. Trying to exile Ozai wouldn't have gone over like Ozai exiling Zuko, a feeble princeling who went *against* popular doctrine. It would have sent the Fire Nation into a civil war, one that Azulon might not have won.

(Of course, the point became irrelevant when Ozai just had Azulon directly killed anyway. Azulon underestimated Ozai's hunger for power.)