Imagine, sometime in the late 2020s, that the United States is plunged into sudden hostilities with a major-power adversary. Only this war will seem to break all the rules. It will begin with a massive cyberattack of unknown origin, intended to cripple America’s energy, transportation, and communications infrastructure. It will be followed by an anti-satellite barrage, in order to render America blind as well as dumb. Then come the AI-guided drone swarms, perhaps synchronized with an invasion of U.S.-allied nations by unidentifiable hybrid troops who quickly mix with the civilian population.