An analysis by Ukraine’s National Agency for Corruption Prevention found 2,797 foreign components in Russian weapons, and 72% of those had their origins in the U.S.

That was in 2024 I don’t think anything changed. They just import it from any BRICS country.

https://fortune.com/2026/05/13/nvidia-chip-smuggling-china-russia-iran-export-controls-supermicro/