Russian President Vladimir Putin promised Slovakia that Russia's Gazprom would find alternative ways to deliver contracted gas to Slovakia after the end of transit through Ukraine, Slovak Prime Minister Robert Fico said on Friday.

Slovakia could take retaliatory measures against Ukraine after Kyiv halted the flow of Russian gas through its territory, Slovak Prime Minister Robert Fico warned Thursday.

Prime Minister Robert Fico said on Wednesday he had secured Slovakia's gas supply during a visit to meet Russian President Vladimir Putin in Moscow last month, just before Ukraine halted the transit of gas from Russia at the start of 2025.

The United Nations Refugee Agency said there were just over 130,000 Ukrainian refugees in Slovakia as of December 8.

Slovakian Prime Minister Robert Fico said Russia will if necessary deliver gas to cover the country’s domestic consumption this year, even as he seeks to restore fuel flows via Ukraine.

A meeting between Slovak, Ukrainian and European Commission officials over gas supplies planned for Tuesday has been cancelled because Kyiv will not participate, Slovakia said on Monday.

However, Fico says it will cost Slovakia 1 billion euros ($1 billion) a year in higher prices for the gas it uses and 500 million euros in onward transit fees. He has threatened to cut emergency electricity supplies to Ukraine as Russia attacks its power grid,

Fico said that Slovakia could halt its humanitarian aid to Ukraine, cut or cancel social benefits for Ukrainian refugees, and cease emergency electricity supplies to Ukraine. He also suggested using veto power over EU decisions as leverage against Kyiv.

Slovakia has criticised Ukraine's decision to end Russian gas transit to Europe, calling it a costly blow not only to Slovakia but the entire EU. While some member states downplay the impact, others face mounting pressure over energy security amid winter demands.