The world police was never really there to stop tyrants, the evidence is that they'd conveniently look the other way whenever they benefitted from it, and they would even put tyrants in place when it suited them. They did stop some tyrants, for sure, but only when it was convenient.
The world saw it's greatest peace under US hegemony. It wasn't perfect and there were bloody avoidable wars on the behest of the US, but by and large things ran smoothly and US sponsored globalism brought prosperity and peace to many.
Too early to make what call? Pax Americana could end tomorrow and it wouldn't make the statement false (well, it would if whatever followed was even more peaceful).
