Genetically altered diseases that can pinpoint a specific ethnic group, weather manipulation causing droughts and famines, self-replicating nanostructures that could be inserted into humans to boost a soldier’s performance (such as armor that can heal itself if a soldier is hit), creating “nanofrankensteins” — these are among the technologies that will radically transform future war in the next 25 years, the Potomac Institute for Policy Studies said in a new report.