From Wikipedia - a good summary. Who knows what to believe about ANY of these Eastern Blocheads. I don't trust an of 'em!
Tymoshenko was fired by President Leonid Kuchma in January 2001, on charges of forging customs documents and smuggling Russian natural gas while she was the president of United Energy Systems of Ukraine between 1995 and 1997. She was arrested in February 2001 but was released and cleared of charges several weeks later. According to Tymoshenko, the accusations were fabricated by Kuchma's regime, under the influence of coal industry oligarchs threatened by her efforts to root out corruption and institute market-based reforms.
However, Tymoshenko's critics have suggested that, as a so-called oligarch, her fortune was gained improperly. Some have speculated her familiarity with the illegal conduct of business common in Ukraine uniquely qualifies her to combat corruption. Her former business partner, the former Ukraine Prime Minister Pavlo Lazarenko is fighting extradition back to Ukraine on allegations of abusing his office for personal gain. He is believed to have sent billions of dollars outside of the country. In addition her husband, Oleksandr, is still in hiding outside of Ukraine facing charges he and his wife describe as unfounded and politically motivated by the former Kuchma administration. Their lawyers are believed to be preparing legal action to dismiss these charges.