"The two armies of corruption and anti-corruption are at a stalemate," China's president, Xi Jinping, reportedly told a closed-door Politburo meeting in late June. Jorge Silva/Reuters/Landov hide caption

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The mask of this Kiev protester (at a 2012 demonstration demanding more funding for HIV treatment) reads "quarantine." There are enough drugs to treat only half the HIV patients in Ukraine. Sergei Supinsky/AFP/Getty Images hide caption

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A young Afghan balloon seller runs toward a customer in Kabul on April 2. Afghanistan, North Korea and Somalia are the most-corrupt countries, according to the annual Corruption Perception Index released Tuesday. Massoud Hossaini/AFP/Getty Images hide caption

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A Mexican attempt to curb bribery among traffic cops turns on the belief that women are less likely to take illicit payments from drivers. A new study suggests that this approach can work, under the right circumstances. iStockphoto.com hide caption

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Even before FIFA President Joseph Blatter announced the 2018 and 2022 World Cup host countries in December, 2010, accusations of corruption were rampant. A panel meant to restore FIFA's image lost a member Monday, as Alexandra Wrage said it was accomplishing nothing. Fabrice Coffrini/AFP/Getty Images hide caption

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In a video by Our Mexico of the Future, child actors play police, criminals and other adult roles, with the goal of highlighting the challenges facing Mexico. Nuestro Mexico Del Futuro hide caption

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