Representatives of Leave.EU, an anti-EU membership campaign group, pose for photographs wearing masks to represent British Prime Minister David Cameron dressed as a 1940s spiv, a slang word for a type of shady character, backdropped by the Houses of Parliament and Big Ben in London, Friday, February 19, 2016. Cameron forged ahead at tougher-than-expected talks with European partners Friday after meetings through the night failed to make much progress on his demands for a less intrusive European Union. (Photo by Matt Dunham/AP Photo)
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