Maybe you wish there was a democratic global government, but that isn't the world we exist it and it will not be a world we live in any time soon.
Game of Thrones has a nice metaphor of "summer born", people like you and me who have been born in a time of peace and prosperity - an outlier period in human history - but who think this is the default state of the world.
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One more point ... Do you disagree that the American 'Empire' has been the most prosperous and peaceful in human history? If so, which one was better?
There is no declaration of war that makes what America is doing in Niger legal, by American legal standards. There certainly isn't any legal cover for America's illegal occupation of Syria. Not to mention, support for genocide in Yemen is absolutely illegal.
Its just that the people remain ignorant of this fact - and its politicians - choose not to enforce those laws for their own purposes (war profit, intolerance, hatred, etc.)
I know. But peacetime can be brutal. As a superpower, America has not taken slaves, nor engaged in genocide, nor established colonies. In those ways it’s hegemony has been much less brutal than all the world superpowers who came before.
Huh??? That's the opposite of what happened. Ages with empires are characterized by peace, trade, and cultural and scientific development. War was the default state in the interim time between empires.
And yes, the American empire (if you want to call it that), has been the most prosperous and benign in history.