U.S. made nuclear submarines are really interesting from that point of view. We had technology in 1960s to make reactors which need to be refilled once per 15-

U.S. made nuclear submarines are really interesting from that point of view. We had technology in 1960s to make reactors which need to be refilled once per 15-20 years without significant incidents. But because of the fear of misuse and technological theft, we have energy crisis.