Slovakia will consider reciprocal measures against Ukraine such as halting back-up electricity supplies after Jan. 1 if Kyiv, as expected, stops the transit of Russian gas to Slovakia, Prime Minister Robert Fico said on Friday.

Zelensky called Fico's pro-Russian energy policy "a big security issue" for Slovakia and Europe, asking: "Why is this leader so dependent on Moscow? What is being paid to him, and what does he pay with?

The weakness, dependence, and short-sightedness of Slovak Prime Minister Robert Fico's energy policy pose threats to the whole of Europe,” said Ukraine's foreign ministry.