Ukrainian President Volodymyr Zelenskyy has accused Russia of moving what it calls volunteer fighters into Ukraine. Zelenskyy accused Russia of relying on conscripts, reservists, and Syrian mercenaries to prop up its forces. In a recent interview, Sergei Ordzhonikidze, former UN deputy secretary-general and former Russian deputy minister of Foreign Affairs, accused NATO of violating international conventions by sending mercenaries to help Ukraine.