KIEV, July 29 - The lawsuits that Naftogaz Ukrayiny and Gazprom have filed against each other in Stockholm arbitration court have been combined into one case, Naftogaz chief Andriy Kobolev said.

"I can now say that they [the lawsuits] have been combined, which will certainly speed the start to hearings in the case," Kobolev said on the Svoboda Slova program on ICTV on Friday evening.