Russia says it will not pay a higher rent to Ukraine for basing its Black Sea fleet on Ukraine's Crimean peninsula.
Russian Deputy Foreign Minister Grigory Karasin says the annual rent for the naval base is not subject to change, because it was fixed by agreement with Ukraine in 1997.
Under the deal, Russia pays $93 million a year to use the base. Ukraine wants to increase that figure significantly to reflect current market prices.
Karasin met with Ukrainian officials in Kiev Tuesday to try to resolve the dispute.
Both sides said they would continue discussing the issue. They also agreed to conduct an inventory of lighthouses and other Black Sea facilities that Ukraine claims as its own.
Some information for this report was provided by AP.