China is free to try to negotiate the establishment of navy bases anywhere in the world they see fit. And so is the US. The US has vastly more allies globally than China does, and that's the difference. Few countries trust China enough to establish long-term military arrangements with them. Whereas the US has been part of NATO for decades, and has been openly protecting Europe for decades - and the Europeans welcome it.

You think Germany wants China to set up a large military base in their country? How about South Korea or Japan? Of course not.

the trust has more to with NATO vs Warsaw, then the benevolence of usa.

Does it matter where nuclear weapons are? Can China or the US deliver one anywhere in the world?

No, once someone fires one nuclear missile no one will be left to argue who won.

With nuclear subs, it really doesn't matter.

With ICBMs with 12,000 mile range, it doesn't either.

Then why do we do it?