International Monetary Fund

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A French prosecutor on Monday opened a preliminary investigation into allegations of rape in a Washington hotel by Dominique Strauss-Kahn, a former International Monetary Fund chief and one-time French presidential hopeful. (Associated Press)

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Former International Monetary Fund leader Dominique Strauss-Kahn enters a building before his lecture at the Ukrainian Diplomatic Academy in Kiev on April 4, 2012. (AP Photo/Sergei Chuzavkov)

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U.S. Treasury Secretary Timothy F. Geithner and Japan's Finance Minister Jun Azumi confer at the IMF/World Bank spring meetings in Washington on Saturday. The U.S. has not pledged more money for the IMF's fund used for loans to troubled nations. (Associated Press)

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IMF Managing Director Christine Lagarde speaks during a news conference in the International Monetary Fund Spring Meetings at the IMF headquarters in Washington on Saturday, April, 21, 2012. (AP Photo/Jose Luis Magana)

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** FILE ** International Monetary Fund (IMF) Managing Director Christine Lagarde speaks at the Associated Press Annual Meeting in Washington, Tuesday, April, 3, 2012. (AP Photo/J. Scott Applewhite)

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Christine Lagarde, managing director of the International Monetary Fund, on Thursday called for a worldwide safety net similar to the reserve fund that European institutions have created to bail out debt-ridden members. (Associated Press)

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Christine Lagarde, managing director of the International Monetary Fund, speaks at the annual meeting of the Associated Press in Washington on Tuesday, April 3, 2012. (AP Photo/Pablo Martinez Monsivais)

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Former International Monetary Fund chief Dominique Strauss-Kahn (partially visible at center) leaves a courthouse March 26, 2012, after being questioned in a probe into a suspected prostitution ring in Lille, France. (Associated Press)

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** FILE ** Former International Monetary Fund chief Dominique Strauss-Kahn arrives at a police station in Lille, France, on Tuesday, Feb. 21, 2012. (AP Photo/Michel Spingler)

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Poul Thomsen (right), the International Monetary Fund mission chief in Greece, European Commission official Matthias Mors (center) and Klaus Masuch of the European Central Bank leave Maximou mansion in Athens on Jan. 20, 2012, after a meeting with Greek Prime Minster Lucas Papademos. (Associated Press)

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Dominique Strauss-Kahn, former head of the International Monetary Fund, leaves his home in Paris on Thursday, Sept. 29, 2011, on his way to a police station to confront a writer who has accused him of attempted rape. (AP Photo/Yoan Valat)

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International Monetary Fund (IMF) managing director Christine Lagarde, left, talks with Tunisian Finance Minister Jelloul Ayed during the group photo at the Deauville partnership meeting in Marseille, southern France, Saturday, Sept.10, 2011. (AP Photo/Lionel Cironneau)

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Dominique Strauss-Kahn (right), former head of the International Monetary Fund, and his wife, Anne Sinclair, gesture to the media upon their arrival at their home in Paris on Sunday, Sept. 4, 2011. (AP Photo/Jacques Brinon)

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ASSOCIATED PRESS Former International Monetary Fund leader Dominique Strauss-Kahn (center) leaves Manhattan state Supreme Court with his wife, Anne Sinclair, and attorney Benjamin Brafman after a hearing Tuesday in New York. A New York judge dismissed the sexual assault case against Mr. Strauss-Kahn.

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Nafissatou Diallo, the hotel housekeeper who has accused Dominique Strauss-Kahn, former head of the International Monetary Fund, of sexually assaulting her, leaves a state office building in New York with her lawyer, Kenneth Thompson, after meeting with prosecutors on Monday, Aug. 22, 2011. (AP Photo/Seth Wenig)