Ukrainian Prime Minister Yulia Tymoshenko on Wednesday turned down a request from Slovakia to resume gas supplies to avoid the introduction of unprecedented measures, according to Reuters.

"Ukraine does not have sufficient gas. We do not have our own supplies," Tymoshenko told her Slovak counterpart, Robert Fico. "You have signed a contract with Russia and if they provide gas we, in turn, will ensure supplies."

Fico told Tymoshenko: "Slovakia pays for gas at world prices and has sufficient reserves for 11 days. After 12 days, we will be obliged to resort to measures never seen in our history. May I simply ask how long this will go on?"