Syriza's leader Alexis Tsipras signs a book as he is sworn in as Greek Prime Minister at the Presidential Palace in Athens on January 26, 2015. Tsipras' party took more than 36 percent of the vote in Sunday's general election, becoming the first elected movement in Europe openly opposed to austerity. AFP PHOTO / ARIS MESSINIS (Photo credit should read ARIS MESSINIS/AFP/Getty Images)
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