Hellscape manifested publicly in the recent sale of more than 1,000 of Anduril’s Altius-600M and AeroVironment’s Switchblade-300 drones to Taiwan.3 While this is a logical first step—and understanding that much of the United States’ and Taiwan’s deterrent planning will not be found in the public sphere—lessons from Ukraine suggest a stockpile of high-end U.S. unmanned aerial systems (UASs) alone will be insufficient to darken the Taiwan Strait for a month.,P. First, planners must reckon that 1,000 drones is not a lot. Across Ukraine’s 600-mile front line, where an actual Hellscape of unmanned systems has been brought into existence, Ukrainian forces...