A Ukrainian Army sniper prepares his rifle at a shooting ground near a front line, amid Russia's attack on Ukraine, in Donetsk region, Ukraine December 23, 2023. (Photo: REUTERS/Viacheslav Ratynskyi)

Kremlin spokesman Dmitry Peskov made the comments ahead of a meeting of EU leaders at which the matter is due to be discussed.

"Naturally, we will use all possible judicial mechanisms, those that are available now, and all those that become available in the future," Peskov told reporters.

"And on the basis of reciprocity we will not retaliate in kind, but choose different methods in a way that corresponds to our own interests," he said.