Russia until not ready to sign the agreement with Ukraine on gas by more than one quarter, told reporters the Minister of energy Alexander Novak. Responding to a question about that, will you continue the practice of agreements between "Gazprom" and "Naftogaz" on a quarterly basis or Russia can go for a longer contract, covering the period until the decision of the Stockholm arbitration, Novak said: "It will be depending on price volatility in the oil market. Because of the volatility we have on a quarterly basis to make such a decision ". He added that at present Russia offers Ukraine a discount on gas in order to provide reliable transit to the European Union, is impossible without filling in Ukrainian underground storages. "Gazprom" and "Naftogaz" on April 1 signed a supplementary agreement on gas supplies to Ukraine in the 2nd quarter. For its part, the Cabinet of Ministers of Russia has given Ukraine a discount for the second quarter in the amount of $ 100 per thousand cubic meters at the expense of export duties. Novak rejected the version that the lost through discounts funds are able to be expressed by the Russian side of Ukraine in the framework of the arbitration process in Stockholm." The discount is given, and no penalties will not " - said the Russian Minister. "Gazprom" and "Naftogaz" in June 2014, the reciprocal lawsuits in the Stockholm arbitration: Gazprom asked in a persistent form to recover from Ukrainian organizations debts and interest totalling $ 4, 5 billion dollars, "Naftogaz" - retroactively revise the price of gas and to recover all overpayments, estimated to be at least $ 6 billion. These cases were consolidated.