Tenex, a Russian government-owned company that sells enriched uranium abroad.
It was the main uranium supplier to the US enrichment firm Centrus Energy until a 2024 US law banned Russian uranium imports, after which Russia formally revoked Tenex's license to sell to America.
After the May 2024 Prohibiting Russian Uranium Imports Act, Russia rescinded Tenex's export license by decree, cutting the US nuclear-fuel supply line as tit-for-tat. Russia's Rosatom controls roughly 44% of the world's uranium enrichment.
It shows how tangled and one-sided nuclear fuel supply chains are, and how a routine trade relationship can become a geopolitical weapon. The engine leaves open whether this was deliberate decoupling, natural supply-chain concentration, or just a routine state export firm, treating all three readings as real.