KIEV, July 12 – BYT leader Yulia Tymoshenko has asked the Parliament commission investigating the adoption by the Stockholm Arbitration Tribunal of a ruling obliging Naftogaz to return 11 billion cubic meters of natural gas to RosUkrEnergo to invite President Viktor Yanukovych to a meeting to provide explanations.

"I think it's necessary to invite President Viktor Yanukovych to provide explanations to the investigative commission," she said on Monday.

"If they are ready to testify, they will come and defend their position," Tymoshenko said, adding that a commission meeting should also be attended by everybody involved in the work of RosUkrEnergo, in particular, its co-owner Dmytro Firtash, the head of the Ukrainian presidential administration, Serhiy Liovochkin, Fuel and Energy Minister Yuriy Boyko and Naftogaz CEO Yevhen Bakulin.