PoliticsNaftogaz goes to arbitration in bid to make Gazprom pay for full transit serviceGas stocks are high in Ukraine and in Europe but Naftogaz is seeking leverage as winter disconnection fears mountEscalation: A fire raging at the heat and power plant TETS-5 in Kharkiv in northern Ukraine after it was hit by a Russian missile on 11 September.Photo: REUTERS/SCANPIXVladimir Afanasiev