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British Prime Minister David Cameron and Gerda Hasselfeldt (L), parliamentary group leader of Germany's conservative Christian Social Union (CSU) party, share a smile as Cameron attends a meeting of the CSU in Wildbad Kreuth, southern Germany, on January 7, 2016. Cameron drove home his call for EU reforms to protect European welfare systems, saying what is good for Britain is also good for Europe, as he held talks with the Christian Social Union -- sister party of Chancellor Angela Merkel's CDU. / AFP / Christof STACHE (Photo credit should read CHRISTOF STACHE/AFP via Getty Images)

British Prime Minister David Cameron and Gerda Hasselfeldt (L), parliamentary group leader of Germany's conservative Christian Social Union (CSU) party, share a smile as Cameron attends a meeting of the CSU in Wildbad Kreuth, southern Germany, on January 7, 2016. Cameron drove home his call for EU reforms to protect European welfare systems, saying what is good for Britain is also good for Europe, as he held talks with the Christian Social Union -- sister party of Chancellor Angela Merkel's CDU. / AFP / Christof STACHE (Photo credit should read CHRISTOF STACHE/AFP via Getty Images)
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AFP CHRISTOF STACHE