And if DARPA have genuinely just funded research that will permit them to run cold-fusion powered units they'd be publishing this knowledge for all to use rathe

And if DARPA have genuinely just funded research that will permit them to run cold-fusion powered units they'd be publishing this knowledge for all to use rather than using it as a decisive advantage why...? I agree that this looks very suspicious and by Occam's razor it's probably a hoax. But by Clarke's third law, when successful fusion is finally announced honestly - whether it's this time or beyond any of our lifetimes - it's going to look quite a lot like a hoax, I suspect.