Sep 4, 2026 · 1h 1m
Lasers promise cheap defense, but power and weather still decide
Why Laser Beams Are the Hottest New Tech in Defense
Directed-energy weapons could change the economics of defending against drones and missiles, but infrastructure, supply chains, and battlefield conditions limit their reach.
- 1Lasers and high-powered microwaves offer different ways to counter drones, with microwaves potentially affecting electronics across wider areas.
- 2Low cost per shot could stretch defenses against drones and missiles, but power generation, weather, and deployment conditions remain decisive.
- 3Iron Beam may show whether directed energy can move from promising research to reliable, scalable battlefield capability.
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The discussion of Iron Beam turns directed energy from a technology forecast into a testable question about range, reliability, engagement time, and cost.
The brief
Wayne Sanders, a retired Army colonel and Bloomberg Intelligence defense analyst, traces directed energy from Star Wars-era research to fielded laser and microwave systems.
Lasers concentrate heat on individual targets, while high-powered microwaves can disrupt electronics across wider areas, including drone swarms; both depend on substantial power.
The appeal is economic: a reusable system could reduce the cost of engaging drones and missiles, especially when advanced interceptors are scarce and expensive.
That promise meets practical limits in weather, range, power generation, focusing, critical minerals, and the industrial capacity needed to scale systems beyond prototypes.
Israel’s Iron Beam offers a real-world test: its range, engagement time, reliability, and economics could reveal whether laser warfare is ready for sustained operations.
The broader lesson is that directed energy may lower the cost of individual engagements without eliminating scarcity; it shifts the bottleneck toward infrastructure and production.
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