Warning - this is a bass-tard with a capital B Some of the countries I've not even heard of, never mind the capital cities Good luck - I got 10/15 (but gutted I got Kosovo incorrect it's kind of on my Balkan 'bucket list') http://www.telegraph.co.uk/travel/travelnews/11138072/The-worlds-hardest-geography-quiz.html
If I'm being totally honest I only actually knew about five of them, the rest were very much (educated) guesses - I was actually cross with myself for getting the first one wrong!
5, think I guessed all of them. Should've got Eritrea, I remember looking up the answer for a pub quiz!