KIEV, Nov. 9 - The issue of how much Ukraine will pay for Russian natural gas after 2010, when an agreement on relations in the gas sphere that was signed on Jan. 4, 2006 expires, was the main unresolved issue at talks held in Moscow on Thursday between Ukrainian Fuel and Energy Minister Yuriy Boiko and Gazprom CEO Alexei Miller a source in the Ukrainian delegation told Interfax.

The two parties had virtually no disagreements on gas prices for Ukraine in 2008-2010, the source said.