Isn't weapon's grade uranium at 85%? I know that western powers got really worried at Iran past 19.75%. But, I still doubt it's that heavy for energy applications, even if military.
You are mistaken. US naval reactors run on around 95% enriched uranium. There's a desire to switch to lower enrichment fuels, but it meets a lot of competing concerns, such as state of the art naval reactors can be fuel'd just once for a ~40 year lifetime. Basically, military naval reactors are not a pathway to economic civilian reactors because the military has different concerns and less price sensitivity vs those concerns.
