If he decided to stop acting for the sake of the Leaf, who's gonna arrest him? Sarada the only person who could pull it off with her life������������.Well as long as he's working for the sake of Konoha he's been given a free hand. Anyway its quite clear from gaiden that he went on a secret mission to gather intel on Momo.
Lol, the alliances between villages after war is different. Best example would be Naruto's rescue were the Kages volunteered themselves to go save Naruto so you're wrong. Its another thing that they were not much help but fact remains that they decided to help on their own.
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