Ukraine’s efforts to unblock deliveries of Russian gas as winter sets in were deadlocked on Thursday as Moscow’s negotiators were quoted demanding firmer commitments from the European Union to cover Kiev’s pre-payments for energy. EU-hosted talks were adjourned after running late into the night, Energy Minister Alexander Novak and the head of Russian gas firm Gazprom ( GAZP.MM ) told Russian news agencies. They would resume later in the day if Ukraine and the EU had a firm financing deal in place, Gazprom head Alexei Miller said. Ukrainian and EU officials were not available. A spokeswoman for Energy Commissioner Guenther Oettinger issued a statement cancelling a news briefing that had been tentatively set for 8:30 a.m. (0730 GMT) in the event of an agreement. There has already been agreement on the price Kiev will pay for gas over the winter, the amount to be supplied and […]