Are you smarter than a US politician?
A challenger in the US presidential race has been mocked after being baffled by a question on the Syrian conflict.
Asked how he would resolve the crisis in the city of Aleppo, one of the civil war's major battlegrounds, Libertarian Gary Johnson answered: "What is Aleppo?"
Mr Johnson later admitted he had "blanked", but he is not the first candidate running for the White House to have gaps in their knowledge. Could you do any better?
Picture credits: 1, 5 7 - Reuters, 2 - AP 4 - AFP 6 - Getty Images