"Today is the 25th day of a hunger strike of MP, PACE delegate, prisoner of war, and political prisoner Nadia Savchenko," Polozov said, according to Ukrainian online newspaper Ukrainska Pravda.

"Why can’t the defenders of the Russian world let the Christian Nadia Savchenko go home for Christmas? Why can’t the Russian Orthodox Church stand up for the Christian Savchenko on the eve of the Orthodox Christmas?" Mark Feygin, Savchenko’s lawyer, wrote on his Twitter page earlier.