Why so many of us were wrong about missile defense
Recent events in Ukraine and the Iranian strike on Israel have revived debate over how effective and sustainable modern missile defense really is. Commenters weigh evidence that systems like Patriot, Iron Dome and similar batteries can intercept large numbers of missiles and drones, but question whether this matters when attackers can overwhelm them with much cheaper munitions and when defenses depend on costly, limited interceptors. The thread broadens into concerns about arms economics, future technologies such as laser defenses, the risk of political overconfidence in missile shields, and whether massive U.S. military spending meaningfully improves long‑term security compared with diplomacy or domestic investment.
Cost Asymmetry and Economics of Defense
- Many focus on the unfavorable cost ratio: cheap drones/missiles forcing defenders to expend very expensive interceptors, which seems unsustainable in prolonged conflicts.
- Others argue you must compare to the value protected: spending millions per interceptor is rational to save billion‑dollar assets or major cities.
- There is debate over whether this “cost‑exchange” framing ignores human lives and infrastructure, versus seeing it as necessary armament economics.
- Some worry Western stockpiles (e.g., Patriot interceptors, artillery shells) are limited even if budgets are large.
Emerging Technologies and Counters
- Slow drones are seen as relatively easy targets (guns, cheaper interceptors, dedicated anti‑drone systems).
- Laser and directed‑energy systems are repeatedly cited as a key future solution, potentially reducing per‑shot cost to a few tens of dollars of electricity.
- Kinetic intercept is described as technically mature; main hard problems are materials at hypersonic speeds and high‑throughput sensing/processing.
How to Interpret Iran’s Strike on Israel
- One camp: Iran staged a calibrated “fireworks show” or warning shot—telegraphing attacks, separating drone/missile waves, possibly even leaking targets—aimed at domestic prestige and deterrence without major escalation.
- Another camp: Iran tried to overwhelm defenses and largely failed; many missiles reportedly malfunctioned, and interception success was very high.
- Counterpoint: even with help from multiple allies, some ballistic missiles still got through, suggesting defenses can be saturated by larger or better salvos.
- Disagreement remains over actual dud rates, costs on each side, and what the performance implies for future large‑scale attacks.
Nuclear and Strategic Context
- Several distinguish between theater missile defense (Patriot, S‑400, David’s Sling) and the impossibility of reliably stopping an all‑out nuclear exchange; arms control is still seen as essential there.
- Some fear improved defenses might embolden “nuclear chicken,” pushing crises closer to the threshold.
US Military Spending, Politics, and Accountability
- Some see the recent performance as vindicating long‑criticized programs (missile defense, F‑35), implying high R&D outlays paid off.
- Others argue this does not justify vast, opaque budgets or the idea that defense policy should be insulated from democratic scrutiny.
- There is tension between prioritizing military readiness versus redirecting funds to climate, health, or AI, given long‑term existential risks.