system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout] What happened to every other country apart from China and America?

I know that America and China nuked each other, but what about places like U.K and Australia? Was every single country nuked? There is a lot of land mass, how did every piece be destroyed?
gpt
What high civilization there is in Britain is to the north in Scotland, with Hadrian's Wall standing as a renewed bulwark against the tribals that hold the south. The British Government still exists, but it's power is pretty much limited to the fortified city of Edinborough. Ireland wasn't actually nuked, but fallout and hordes of desperate survivors have reduced it to a post-apocalyptic wreck like the rest of the world.

No one has heard anything out of Russia in the two centuries since the war. As far as anyone knows, it's a frozen nuclear wasteland. Anyone who goes there (or into Eastern Europe in general) never returns.

For a long time there were gaping atomic scars all over Africa, nuclear missiles having rained down on China and America's respective "protectorates". Of late, the nation-state of Mali has reformed and begun a trade in pre-war tech, gathered from the remains of Saharan U.S. outposts.

Japan has pretty much regressed to back to the age of the samurai, except this time the feudal warriors are wearing power armor. The rest of the Orient is hauntingly quiet, with the exception of a few whispers of a new Khan in the North.

South America is pretty much hell. There's not a whole lot else to say about that.