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Associated Press
Greece's Prime Minister Alexis Tsipras waves to the members of media as he arrives at Maximos Mansion, the Greek Prime Minister's official residence in Athens, Monday, Jan. 26, 2015. Dimitris Tzanakopoulos, right, the newly-appointed chief of staff of Tsipras, looks on. Radical left leader Alexis Tsipras has been sworn in as Greece's new prime minister, becoming the youngest man to hold the post in 150 years. (AP Photo/Lefteris Pitarakis)

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