Space, the fifth warfighting domain. A deep dive into the next strategic frontier, the expanding battlefield

Throughout history, humanity’s conflicts have evolved in lockstep with its technological frontiers. From battles on land and sea to the dominance of the air in the 20th century, each domain brought new tactics, weapons, and doctrines. Following the digital revolution, cyberspace emerged as the fourth warfighting domain, transforming how nations project power, defend sovereignty, and deter aggression. Now, a fifth domain has fully arrived — space. No longer a peaceful void reserved for exploration and science, space has become an arena of strategic competition, intelligence collection, and, increasingly, potential conflict. Nations are racing to secure orbital dominance, safeguard their satellites, and develop capabilities that blend terrestrial and extraterrestrial defense into one seamless architecture. ...