What defines the aspirational boundaries of the leader of any powerful nation, who has seen it all, done everything? In the US, many Presidents who are about to get through their second term have had a go at turning the world on its head by waging war or brokering peace. More often than not they have ended up doing both, one after the other. In the bargain, they have looked over the shoulder to see if the Nobel Peace came beckoning.
In Europe, they just fade away as part of think tanks, some make good in the lecture circuit or join some trust or the other. Quite a few return to their respective professions. The lucky ones get to stay relevant as politicians.
In the developing world, especially in Africa, one has seen too many democratically elected heads of state deciding to elect themselves for life and stay put for many decades, surviving many coups before finally succumbing to one. And, of course, there are countries like China where one doesn’t need to subvert law to stay in power for long periods of time.