As it happens, JockBoy, I have posted a few threads on non-American topics. They got a reasonable response, including useful and thoughtful responses from Americans, and I figured that it was worth the trouble to post,. There is a bit of JUB history on this topic that I think makes a difference. It used to be CE&P for all political topics, and then in an effort to improve things, Mod Towers created an "International" sub-forum, designating CE&P by default as "American Only" and brushing off everything else to this International sub-forum so that Americans would not have to be inconvenienced by ever accidentally reading something that wasn't about themselves.
Okay, I'm sure that wasn't the intent of Mod Towers, but that was the effect. Rather than fostering international discussions, I recall a lot of them drying up around that time, and they've just never come back. It was the wrong call, and it was reversed. If anything, CE&P should be the international forum, and given the demand, an American subforum could be created for those who wish to isolate themselves within their borders.
Anyway, as I have posted elsewhere, all it takes is for the international people to keep posting.