Essentially due to western government sanctions, leasing companies are forced to break the lease (law of the land). In retaliation, Russian government sanctions

Essentially due to western government sanctions, leasing companies are forced to break the lease (law of the land). In retaliation, Russian government sanctions are blocking airlines from returning the planes (law of the land too). Both are just following laws and rules in their respective jurisdiction. And with western countries confiscating assets belonging to private citizens just because they have Russian citizenship (with only tangential relationship to Russian government and zero influence on Ukrainian war), EU/US are not exactly in a place to get on high horse.