Banker and oil magnate Ihor Kolomojsky, who aired Zelensky's comedy show 'Servant of the People', returned to Kyiv after a two-year exile. Under Poroshenko, his PrivatBank was nationalised. Now there are signs that the tycoon is protected, says Kyiv-based Christopher Miller in an article on RFE/RL. How independent is president Zelensky?