Thorium reactors breed U-233, but not as a waste product. The U-233 is consumed to generate power. I'm not sure what the U-233 produces when it undergoes fiss

Thorium reactors breed U-233, but not as a waste product. The U-233 is consumed to generate power. I'm not sure what the U-233 produces when it undergoes fission but I don't think the result is weaponizable.