it was a little misleading to call harpers a news magazine...it's more commentary/essay/feature/short story than news reporting. it's printed in new york and has an american focus, but also covers other areas of the world in feature stories. the feature writers could be living anywhere. however, you probably won't get the sort of "out of the bubble" perspective that you would get from a non-American publication.
for a good international perspective, i catch the BBC World Service on the radio when i can. a local station plays World News at 5 GMT.
http://www.bbc.co.uk/worldservice/
unfortunately i can't think of a magazine that provides something roughly equivalent.