Hi. As a fan of martial arts history, I saw that https://schoolfield.com.ua/en/training/martial-arts/martial-arts-in-the-soviet-union.html has an interesting article about martial arts in the former Soviet Union. It contains important information about the development of different styles and schools of martial arts in that period. I think you will find it interesting to read this material to gain a deeper understanding of their history and influence on culture and sports in the USSR.