KIEV, October. 13. /TASS/. Ukraine insists that Russian gas deliveries should not be realized on prepaymant terms, Ukraine's Energy Minister Yuri Prodan said Monday.

In an interview to a Ukrainian online edition, Prodan said Ukraine should pay for Russian gas upon its delivery.

Earlier Monday, Russian Energy Minister Alexander Novak said Ukraine doesn't agree to pay part of the outstanding debt for Russian gas before supplies begin.

He declared that Russia’s original stance remains unchanged: “Part of the debt must be paid first, before gas deliveries resume.”

Russia-Ukraine gas dispute

Russia stopped gas flows to Ukraine in June over an unsettled dispute over debt and gas prices. Russia said it is ready to resume natural gas supplies to Ukraine if Kiev repays its gas debt and makes advance payments for new gas deliveries.

The Naftogaz oil and gas company stopped paying for the consumed Russian natural gas on March 25. As of August 1, the overall debt of Naftogaz to Gazprom for supplied gas totaled about $5.3 billion.