Ukraine halted the flow of Russian gas to several European countries on New Year’s Day, bringing an end to Moscow’s decades-long dominance over Europe’s energy markets.

Russia’s state-owned energy giant Gazprom confirmed gas exports to Europe via Ukraine stopped at around 8 a.m. local time (5 a.m. London time) on Wednesday.

The widely expected move marks the end of a five-year transit agreement between Russia and Ukraine, with neither side willing to strike a new deal amid the ongoing war.

Ukrainian President Volodymyr Zelenskyy said last month that Kyiv was not prepared to prolong the transit of Russian gas, adding: “We will not give the possibility of additional billions to be earned on our blood.”

Russia, which has transported gas to Europe via Ukrainian pipelines since 1991, says European Union countries will suffer the most from the supply shift. Moscow can still send gas via the TurkStream pipeline, which links Russia with Hungary, Serbia and Turkey.