What world affairs publication(s) should I read?
I think you should go with your first impulse and get The Economist and Le Monde Diplomatique. Between the two of them you’ll get a good overview of world affairs from a variety of viewpoints. If you hunger for long, in-depth reporting on a single issue I have to recommend The Virginia Quarterly Review. It’s usually about 50% literature and 50% long form journalism, usually about non-Western issues. They’re almost always of very high quality, too.