With Russia’s 10-year gas transit contract due to expire at 9 am Kyiv time tomorrow, a lead Ukrainian negotiator says talks finished yesterday morning in Vienna. “Today at 5:28 a.m. we completed an almost round-the-clock 4-day negotiation marathon with Gazprom in Vienna,” Sergiy Makogon, general director of the new company Operator of the Gas Transmission System of Ukraine, wrote on his Facebook page. Gazprom did not comment on the outcome of the talks. Hours later, Makogon flew to Vienna to sign an operator agreement with Slovakia’s Eustream, the main recipient of Russian gas flowing across Ukraine.