Israel attacked Iran's steel plants during the ongoing conflict, asserting the facilities generate revenue for Iranian forces and supply raw materials for weapons production. The strikes targeted a sector that accounts for roughly 10% of Iran's non-oil exports, with annual output exceeding 30 million metric tons before sanctions intensified.

The assault disrupted domestic supply chains for construction and automotive industries, driving local rebar prices up 15% in Tehran markets within weeks. Civilian economy damage extends beyond immediate output losses — foreign buyers, already wary of sanctions compliance, have shifted orders to Turkish and Indian producers, accelerating a market-share erosion that began in 2018.

Commodity traders note the strikes created a risk premium on Middle East steel routes, though global benchmarks remained stable given ample Chinese and CIS supply. The International Committee of the Red Cross has questioned whether dual-use industrial facilities meet the proportionality threshold under Additional Protocol I, citing precedent from the 1999 NATO bombing of Yugoslavia's Zastava complex.

The debate hinges on whether steel's contribution to missile casings and drone frames constitutes "direct participation in hostilities" or merely general war-sustaining capacity. If courts eventually classify such strikes as unlawful, insurance underwriters may exclude war-risk coverage for industrial infrastructure in conflict zones, raising capital costs for steelmakers across the Gulf.