The USA it seems is no longer the world leader, China despite all the hype tends to be resented around most of the world and is thus unlikely to be a leader itself. It seems that most countries strongly resent outside intervention in South America and Africa. From my own opinion the world is beyond the use of having superpowers and leaders.
Do you feel that
1. america is or is not a superpower / leader
2. The world is beyond needing or for that matter wanting superpowers or leaders