The opposite side of that is interesting too
Russia continues to supply enriched U3O8 to the USA. They have never threatened to stop selling it. And quite ironically, American nuclear plants NEED Russian enriched uranium. It’s not merely commodity “uranium” but Russia’s Rosatom manufactures the fuel rods or pellets to match the exact specs needed by each American reactor. The USA itself is short of enrichment capacity (and is now slowly rebuilding it) so Russia really could have caused at least a short-term crisis by stopping the shipment
If the likes of Lindsey Graham were in charge in Russia, it would have happened 10 years ago.
But they did not do it - why?
“But they did not do it - why?”
Because the Russians are buying production equipment from China (which has the world’s broadest industrial production economy) to meet current needs and to hold in reserve in case Ukrainian drones strike more Russian factories.