They are, perhaps intentionally, rather fluid and vague. I mean, if you wanted to argue about it, you could say that the problems with Zimbabwe are politics, and certainly aren't new: they've been covering that country's decline for years in The Economist, and if I recall, had one of their reporters kicked out of the country.
Speaking of the guidelines, I don't think anyone pointed out the one that actually addresses the "off-topic police" explicitly:
Please don't submit comments complaining that a submission is inappropriate for the site.
I know this one! Hacking and startups:-) My concern is not 'uninteresting' at all, but the slippery slope that reddit went down, where a trickle of genuinely interesting articles on politics and economics became a flood of crap.
Now if you'll excuse me, I'm going to go find some articles about Nietzsche's "eternal recurrence" to post here. :)