Any 'useful' payload would erase any plausible deniability. If the idea is to merely drop a piece of scrap metal on some politicians house or something, with n

Any 'useful' payload would erase any plausible deniability. If the idea is to merely drop a piece of scrap metal on some politicians house or something, with no warhead involved, I don't think they can do that. Reentry is too chaotic for a piece of unguided rocket debris to hit a target that exactly.