On 14 March, Flight Global reported that Vladimir Putin has moved to effectively seize hundreds of aircraft currently operated by Russian carriers from foreign lessors. He signed a law that allows the jets to be registered in Russia, in essence confiscating them from their overseas owners, retaliating against sanctions.
https://www.flightglobal.com/russia-moves-to-seize-hundreds-of-leased-aircraft/147918.article
https://www.flyingmag.com/analysts-speculate-russia-might-not-return-hundreds-of-leased-airliners