Where will the future battlefields be? Will they include cyberspace?
One major development will be swarms of nano-engineered devices. Already, the US Department of Defense's Smart Dust project has prototypes that can reconnoitre. For example, millions of sensors can detect detailed movement of humans and machines in a large area. Ultimately they will be able to explore substantial terrains stealthily, perhaps looking for specific individuals. In a decade, they will be capable of performing offensive missions.
Cyberspace will be a key battlefield. With software running in and around our bodies and brains, software integrity and security will a key strategic issue.