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[Avatar: Legend of Korra Book 4] So exactly just how effective was the Air Nation and their humanitarian/peacekeeping mission?

At the end of Book 3, Korra is bound to a wheelchair and has suffered so much. She deserved time to sit back and heal, especially when she was close to being brutally killed by Zaheer. Because of this, during Jinora’s airbending master ceremony, Tenzin declared that the new Air Nation will take up the mantle as a humanitarian and peacekeeping organization to help stabilize the former Earth Kingdom. 

But just how effective was the Air Nation in helping to restore some sense order and providing aid to towns and villages in need? They seemed like they had a respectable reputation and have done some good but in comparison to Kuvira and her army, it seems to pale in comparison.
gpt
There's an episode in Book 4 contrasting the Air Nation's efforts and Kuvira's. Kai and Opal try and get supplies to a town that is on the verge of starvation, but the supplies end up getting stolen by bandits. On the other hand, Kuvira's army is able to distribute supplies to that town without any interference from bandits, and actually have the numbers to garrison the towns they aid so bandits don't move back in once they leave.

It just seems like the Air Nation is spread far too thin, so despite the reputation for Kuvira's aid coming with strings attached, most states in the former Earth Kingdom end up concluding that aid with strings attached beats no aid at all.