Peace for who? that's the question. No one denies it brought peace to the west.

The reason developing nations want a multipolar world is to have room to manoeuvre and develop themselves, to be able to bargain with multiple powers, there is not much bargain in a unipolar world, when the USA does not want you to get too big, or your interest conflicts with theirs you're fucked.

USA (and the west) has learned that colonialism with a foreign army does not work efficiently, so they colonize countries by choosing who gets elected or performing coups and putting people that serve that interests even on the detriment of their nation.

African nations make a good example for countries that are officially independent but have no sovereignty whatsoever.

It's a monopoly of power, what's worse is it thinks it's interests are what defines good and bad.