According to Ponomarev, propulsion plants of these ships "have been fully paid by Ukrainian partners and are currently in Ukraine, so we’re going to resolve this problem".
After the flare-up between Russia and Ukraine in 2014, construction of the second trio of the Project 11356 frigates ordered by the Russian Navy became at risk. The ships’ gas turbine propulsion plants are made by the Ukrainian company Zorya Mashproekt, and that became a stumbling block. Defense contacts between the two countries were broken off due to political reasons, which violated the cooperation chain.