The exchange of convicted Nadia Savchenko is possible in theory, only if the Russian legislation is fully observed, Russian presidential chief of staff Sergei Ivanov said.

"As for a possible swapping in theory, this is possible in theory. 'A' (first of all), if the Russian legislation is fully observed, and, 'b' (secondly), only the Russian president (Vladimir Putin) can take a decision on this," Ivanov told reporters on Friday.

He responded so to a question as to whether such swapping is possible from a potential and legal point of view to some persons, who are convicted in Ukraine.

In reply to a question as to whether this exchange is likely under the Minsk agreements, Ivanov said: "This has no relation to the Minsk agreements at all. As the Russian Federation is not a party to the conflict."