Naftogaz Ukrayiny confirmed the fact that the Stockholm Arbitration had united the counterclaims of Naftogaz and Russia's Gazprom in the framework of a new arbitration process and is confident in the validity of its claims, Naftogaz CEO Yuriy Vitrenko has said. "The new "old" demands of Gazprom look like a waste of time and money by Gazprom," he said.