KIEV , Dec. 5 – The Arbitration Institute of the Stockholm Chamber of Commerce has completed hearings in the framework of litigation between Naftogaz Ukrayiny and Gazprom on the gas transit contract, Naftogaz Chief Commercial Officer Yuriy Vitrenko said.

"Proceedings in the Stockholm arbitration have been completed. The tribunal has been hearing legal advisors, witnesses and experts for two weeks," he wrote on his Facebook page.

According to Vitrenko, the Naftogaz team succeeded in giving convincing arguments of its rightness.