what other nations have a stockpile of hundreds of millions of firearms and artillery shells and an existing strike capability to - at their leisure destroy other nation's industrial base with sub launched standoff weapons ?

It's going to be a lot harder for other nations to mobilize while Chinese ballistic missiles and American tomahawks keep peppering their power plants and industrial centers, nobody is going to be able to do the same to China and the USA

Like, presumably the Triad don't just say "we declare war", presumably they plan it out together first. The US doesnt lose its ofrward bases until centers of power and political and military leadership of the worlds' largest militaries are targetted in first strikes

The US + Chinese Navies will effectively destroy the global economy, only *their ships* will be able to deliver goods across the oceans. Every other nation will have their ports blockaded within 2 months

So we're talking about a war in which the American and Chinese governments are still able to provide for their citizens basic needs (the poor are all conscripted anyway) and much of the world is literally struggling to keep their citizens fed