Russia pumped gas on Monday to European customers via Ukraine for one of the last days before a key transit deal expires at the end of the year, marking the almost complete loss of Russia's once mighty hold over the European gas market.

Russia supplied gas to Europe via Ukraine for one of the final times before a key transit deal expires, marking the near-total loss of its dominance in

Ukraine will quadruple gas transmission tariffs for domestic consumers from Jan. 1 to offset the impact of lost revenue following the year-end expiry of the gas transit agreement with Russia, officials said on Monday.

Leaders of the two countries have exchanged accusations and threats ahead of an anticipated halt to Russian gas flows via Ukraine

Now Slovakia is urging the European Commission to address the looming halt of Russian gas supplies through Ukraine, saying the economic impact on the EU will far outweigh the effect on Russia. Ukrainian President Volodymyr Zelensky is set to block Russian gas flows through his country from January,

Ukraine will quadruple gas transit tariffs for its domestic customers starting Jan. 1 when a deal to transport Russian gas through Ukrainian pipes expires, the National Energy Regulatory Commission said during a meeting on Dec.