Former Ukrainian PM Tymoshenko Accused of Treason Ukraine’s parliament deepened allegations against former Prime Minister Yulia Tymoshenko when they voted on Tuesday that her 2009 negotiations on gas imports from Russia constitute treason. Tymoshenko, the country’s opposition leader, has been serving a seven year prison sentence since October after she was found guilty of abusing her office in the 2009 gas deal with Russia. American and European politicians have condemned the sentence as unfair and politically motivated.