Ukrainian Foreign Minister Dmytro Kuleba has called for strengthening sanctions against the Russian Federation, in particular, disconnecting Sberbank from SWIFT, imposing an oil embargo, closing ports for Russian ships, closing crypto loopholes and cuting all ties with the Russian Federation.

"Russia shifts to ugly tactics aimed at maximum civilian damage: bombs residential areas and critical infrastructure, threatens nuclear facilities. Sanctions must increase. Ban Sberbank from SWIFT. Oil embargo. Close ports for Russian ships. Close crypto loopholes. Cut all ties," Kuleba wrote in Twitter on Saturday.