[potato3732842]

I really hate this take because it implicitly ignores the baseline murderous-ness of the systems and situations these leaders inherit. Nelson Mandela wasn't gonna rise to the top of the pile in 1920s Russia.

Furthermore, the people who underpin various states and societies (and the cultures and movements that shape them) do ultimately choose who rules them. Leaders only have freedom of action within the window of what their political capitol affords them. The people, or even just the ones that call the shots (this should be a familiar concept if you've ever seen a TV show centered around a medieval royal family) very much do set that window. Grant and Eisenhower's "failure" to thoroughly exploit conquered territory would have made them unsuitable for further leadership in antiquity for that matter yet they were both more or less instantly elevated by the existing power structure and elected to the highest office.