The Israeli Air Force struck Iran's South Pars gas field on Tuesday — the first attack on Iranian energy production infrastructure since the war began on 28 February. South Pars is the world's largest natural gas reserve. It supplies roughly 70% of Iran's domestic gas for heating, power generation, and industrial use. The field sits in The Persian Gulf, and its geological formation extends across the maritime border into Qatari waters, where it becomes the North Dome — the source of Qatar's entire LNG export industry 1.
The strike crosses a line the United States itself had observed. When US forces hit Kharg Island on 14 March — the terminal handling 90% of Iran's crude exports — Trump explicitly spared oil infrastructure, holding it as conditional leverage: destroy the oil only if Iran blocks the Strait of Hormuz . Israel has now moved past that restraint, targeting energy production rather than military positions on energy sites. Axios reported, citing US and Israeli officials, that Trump and Netanyahu coordinated the strike 2 — directly contradicting Trump's Truth Social post that "the United States knew nothing about this particular attack" 3. The gap between those two accounts is itself a measure of the political difficulty Washington faces in claiming distance from an escalation it apparently approved.
The domestic consequences inside Iran are immediate. South Pars feeds the pipeline network that heats Iranian homes and powers Iranian industry. An extended disruption — even partial — would create civilian hardship layered on top of 18 days of aerial bombardment that has already killed at least 5,300 people across 25 provinces . Iran had warned explicitly after the Kharg strikes that if its Energy infrastructure were destroyed, it would hit Saudi, Emirati, and Kuwaiti installations . The South Pars strike tested that threat. Within hours, Iran executed it — not against Israel or American bases, but against Qatar's Ras Laffan.
The shared geology adds a dimension beyond the immediate military exchange. South Pars and Qatar's North Dome draw from the same underground reservoir. Surface infrastructure damage does not directly threaten the reservoir, but active combat operations centred on South Pars place Qatar's economic foundation in the physical vicinity of sustained strikes. Trump's subsequent threat to destroy "the entirety of the South Pars Gas Field" raises an unanswered question: whether the administration has assessed the risk to the North Dome formation on Qatar's side of the maritime border — and, by extension, to the roughly 20% of global LNG supply that depends on it.
