MOSCOW — In a report commissioned by the government of Ukraine, a team of American lawyers has concluded that important legal rights of the jailed former prime minister, Yulia V. Tymoshenko, were violated during her trial last year on charges of abusing her official power, and that she was wrongly imprisoned even before her conviction and sentencing.
The lawyers, led by President Obama’s former White House counsel, Gregory B. Craig, concluded that Ms. Tymoshenko was denied legal counsel at “critical stages” of her trial and that at other times her lawyers were wrongly barred from calling relevant witnesses.
Those two findings suggest that she could have some success in a pending appeal before the European Court of Human Rights.
But over all, the lawyers, from the firm of Skadden, Arps, Slate, Meagher & Flom, seemed to side heavily with the government of President Viktor F. Yanukovich, which commissioned their report. They concluded that Ms. Tymoshenko’s conviction was supported by the evidence presented at trial, and they found no evidence in the trial record to support to her main contention: that her prosecution was a politically motivated effort by Mr. Yanukovich, her archrival, to sideline her and cripple Ukraine’s main opposition party.
“The trial court based its finding of Tymoshenko’s guilt on factual determinations that had evidentiary support in the trial record,” the lawyers wrote. “Based on review of the record,” they added, “we do not believe that Tymoshenko has provided specific evidence of political motivation that would be sufficient to overturn her conviction under American standards.”
In an interview on Wednesday, Mr. Craig, one of the most connected lawyers in the Washington establishment, said his team was not able to judge the local politics that brought Ms. Tymoshenko to trial on charges of abusing her authority in agreeing to a natural gas deal with Russia when she was prime minister. He acknowledged that Secretary of State Hillary Rodham Clinton was among many Western leaders who have criticized the prosecution as crass political reprisal.
“We leave to others the question of whether this prosecution was politically motivated,” he said. “Our assignment was to look at the evidence in the record and determine whether the trial was fair.”
The report is dated September 2012, but it was held back by the Ukrainian government. It will be publicly released Thursday.
Once a strong candidate for the European Union, Ukraine has become increasingly isolated under Mr. Yanukovich’s leadership. The trial led to a sharp deterioration in relations between Ukraine and the West, and there were subsequent efforts to prosecute Ms. Tymoshenko on charges of tax evasion and embezzlement.
Ms. Tymoshenko, who has chronic back problems, was sentenced to seven years and is being held in a prison hospital in eastern Ukraine. International monitors sharply criticized parliamentary elections that were held in Ukraine in October, citing the jailing of opposition leaders as a main concern.
The Skadden lawyers sharply criticized the judge’s handling of Ms. Tymoshenko’s trial.
“Tymoshenko’s ability to present a defense in her trial appears to have been compromised to a degree that is troubling under Western standards of due process and the rule of law,” they wrote in describing how defense witnesses were barred.
Still, Ms. Tymoshenko’s supporters rejected the report as biased. Her main defense lawyer, Sergei Vlasenko, who met with the Skadden team, also accused the Yanukovich government of lying about how much it paid for the analysis. (Mr. Craig would not say what his firm was paid.)
“They are not independent lawyers,” Mr. Vlasenko said in a telephone interview from Kiev. “There were clear violations of Ukrainian and international standards.” As for the findings that supported Ms. Tymoshenko’s conviction, he said, “They received the clients’ demand: Please find something good for us.”
