no you can’t https://en.wikipedia.org/wiki/Plutonium_Management_and_Disposition_Agreement

russians did their part, they basically gave that plutonium to their nuclear engineers for new things development to fuck around with and got a couple of working fast reactors out of that. americans did something that is very mckinsey coded and debated whether to burn it in pwr as mox like the french do or mix it with some magic powder and hide it in mountain which would be basically the same, right, and russians didn’t like it because you can reverse that, and it ended up with americans doing nothing, then russians withdrew (and they were right in doing this)

tldr diplomacy by committee