Who's In Charge Around Here?

Today is the public inauguration of Barack Obama's second term. I don't have anything really big to say about it, at least not right now. The big superlatives aren't really second-term things; the general attitude towards a second term is 'okay, election's over; back to work'. So in lieu of some huge statement, let's head to Sporcle.

You will be provided with a list of world leaders as of January 1, 2012. Your task is to identify what countries they were running as of that date.

For an extra challenge, you could try it the other way: you're given the countries (as of October 2, 2012), name the leaders. It's tougher to name names than name countries (though both are tough; I only attempted to name countries and I came up with only 49, and even that came in at the 64th percentile). In both cases, you're given the standard Sporcle maximum of 20 minutes.