MOSCOW/KIEV (Reuters) - Russia and Ukraine failed to resolve a gas pricing dispute at talks and a 0600 GMT deadline for Ukraine to pay $1.95 billion in gas debts still stands, a spokesman for Russian natural gas producer Gazprom said on Monday.
Spokesman Sergei Kupriyanov said after talks in Kiev that Russia would switch to an advance payment system if it did not receive the money, meaning Moscow could cut off gas supplies to Ukraine.
