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Rafael Lusvarghi (R) is seen in the courtroom cage in Kyiv, Ukraine, May 11, 2017. Appeal court of Kyiv hears the case on Brazilian Rafael Lusvarghi sentenced for 13 years of fighting together with Russia-backed separatists in Ukraine. (Photo by Sergii Kharchenko/NurPhoto via Getty Images)

Rafael Lusvarghi (R) is seen in the courtroom cage in Kyiv, Ukraine, May 11, 2017. Appeal court of Kyiv hears the case on Brazilian Rafael Lusvarghi sentenced for 13 years of fighting together with Russia-backed separatists in Ukraine. (Photo by Sergii Kharchenko/NurPhoto via Getty Images)