Ukrainian military pilot Nadiya Savchenko arrived home in Kiev on Wednesday after nearly two years in a Russian jail, part of a prisoner swap in which two Russians held in Ukraine were returned to Moscow.

Handing over Savchenko, whose release had been demanded by Western governments and who has become a national hero in Ukraine, is likely to ease tensions between Moscow and the West a few weeks before the European Union decides whether to extend sanctions against Russia.

"A presidential plane with Ukraine's hero Nadiya Savchenko has landed," Ukrainian President Petro Poroshenko said in a post on Twitter.