There are loads of countries that already have weapons, and want power reactors -- but the technology for working with uranium is already in place, and fuel cos

There are loads of countries that already have weapons, and want power reactors -- but the technology for working with uranium is already in place, and fuel costs are so small, so there hasn't been much incentive to work on thorium reactors unless you're going for something dramatically better, like LFTRs. Which China recently announced that they were doing, by the way.