Wars are traditionally fought over territory. But the definition of territory has evolved to incorporate five domains: land, air, sea, space, and, most recently, cyberspace. These dimensions of “CLASS war” define the threats facing the world today. The specific triggers, objectives, and battle lines of such conflicts are likely to be determined, to varying degrees, by five factors: creed, clan, culture, climate, and currency. Indeed, these factors are already fueling conflicts around the world.
via Andrew Sheng argues that cyberspace, land, air, sea, and space now define the basis of global conflict. – Project Syndicate.