Germany's Chancellor Angela Merkel And Ukraine's PrimeMinister Arseniy Yatsenyuk News Conference [Getty Images]

Arseniy Yatsenyuk, Ukraine's prime minister, speaks during a news conference at the Chancellery in Berlin, Germany, on Wednesday, May 28, 2014. Ukraine's government is "ready to clean the bill" and "pay the arrears" of its natural gas bill with Russia, Yatsenyuk said. Photographer: Krisztian Bocsi/Bloomberg via Getty Images

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