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human
[Avatar] Would Ozai's plan to destroy the Earth Kingdom have worked?

There seems to have been a pretty narrow window where the comet buff was in effect, and Ba Sing Sae is basically on the opposite side of the planet from where they launched the airships. 

Was this plan ever viable or was it just an extension of Ozai's megalomania? Were all the fire nation troops on the ground under orders to go scorched earth in conjunction with the airship fleet's approach?
gpt
If the plan was just to do it all during the power boost Sozin's Comet granted then no, it was far far too limited a period to burn down the whole Earth Kingdom, but if Ozai wanted to kick off the genocidal campaign and his rule as the Phoenix King with a bang it certainly was the way to do it in his mind. However there's nothing to suggest that the operation to burn down the Earth Kingdom was going to end with the passing of the comet.