Battles in the next world war will be fought in the air, on the ground, and online. "We've grown used to the fight being in just one domain," Dr. Peter Singer, a strategist at the think tank New America and coauthor of "Ghost Fleet," told Business Insider. "[But] we have these new domains that we've never fought in before, and that's outer space, and cyber space."
Business Insider: This is the future of war
US Army jet F-22 Raptor lands at the Mihail Kogalniceanu Air Base, near Constanta, Romania, on April 25, 2016.
