I wouldn't want us to control the world, just ensure that our little corner of it stays safe and ours. I don't know about leaders always needing to lead. I think great leadership can also consult with others and ask for guidance going forward with especially momentous decisions. Going nuclear-propulsion is a massive step forward in our naval capabilities. It will affect the neighbourhood.
Yes, I'm not bothered about New Zealand's opinions on it.
We'll need to tread lightly with Indonesia & the other SCS rim nations. Specifically Vietnam & Malaysia.
However I'd think they're more bothered by the CCP than us.