WARSAW, May 5 - Ukraine guarantees uninterrupted transportation of Russian gas to Europe across its territory, Ukrainian Energy and Coal Industry Minister Yuriy Prodan said.

"We will be fully honoring all agreements," Novak said to journalists in Warsaw.

Russian Energy Minister Alexander Novak said Russia has made an advance payment for the Ukrainian energy company Naftogaz's transportation services until September 2014. "The second contract for [gas] supplies to European consumers has been paid for in advance through September," he said.