QUIZ: Can you guess the powers that be?

Members of the Group of 20 (G20) wave during the traditional family photo at the G20 leaders summit in the Mediterranean resort city of Antalya, Turkey, November 15, 2015. © Aykut Unlupinar
They're in the news all the time, but how well do you know what they look like. Let's see how many politicians you know when it comes to putting a face to a name.

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