Comment: If both premises were true,

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If both premises were true,

If both premises were true, then nations would have no problem. All you've show is that the two original premises aren't both true. And, there is no emerging global government anyway, and nations do need protection of their nominal sovereignty from larger states, to whom they lose a good deal of their autonomy by being so dependent. But they choose the lesser evil, which is what we do with limited government.