Arrow 3 vs Sejjil-2: Cost-Exchange Ratio & Combat Analysis
Overview
This analysis compares the Arrow 3, a Israel Exo-atmo BMD system costing $3.0M per unit, against the Sejjil-2, an Iranian Solid MRBM costing $1.5M per unit. The cost-exchange ratio of 2.0:1 favors the attacker — meaning it costs the defender 2.0x more to intercept than the missile cost Iran to produce. At Operation Epic Fury burn rates of 4/day, the Arrow 3 inventory of 65 units faces depletion in approximately 16 days. Exo-atmospheric interceptor — Israel's upper-tier BMD against long-range ballistic missiles Solid-fueled MRBM with 2,000km range — faster launch prep than liquid-fueled variants
Side-by-Side Specifications
| Dimension | Arrow 3 | Sejjil 2 |
|---|---|---|
| Unit Cost | $3.0M | $1.5M |
| Cost-Exchange Ratio | 2.0:1 | 2.0:1 |
| Range | Exo-atmo BMD | 2000 km |
| Inventory | ~65 | ~300 |
| Annual Production | 30/yr | — |
| Role | Exo-atmo BMD | Solid MRBM |
| Manufacturer | IAI + Boeing | Iran / IRGC |
| Fuel | Solid rocket | — |
Head-to-Head Analysis
Cost-Exchange Economics
Inventory & Depletion
Tactical Engagement
Scenario Analysis
Mass salvo of Sejjil-2 missiles
Extended conflict (30+ days)
Complementary Use
The Arrow 3 should be integrated into a layered defense architecture, not relied upon as a standalone solution against Sejjil-2 threats. Cost-effective lower-tier systems (Iron Dome at $80K, or Iron Beam laser at $2/shot) should handle cheaper threats when possible, preserving expensive Arrow 3 interceptors for high-value targets.
Overall Verdict
The Arrow 3 vs Sejjil-2 matchup produces a 2.0:1 cost-exchange ratio favoring the attacker. For sustained conflict planning, interceptor production ramp-up and cost-reduction programs are critical to maintaining defensive capability.