What Happened
- The 2026 Iran-US-Israel war that began February 28 has placed the Strait of Hormuz — the world's most critical maritime oil chokepoint — at the centre of global geopolitical and economic anxiety.
- Iran has threatened to close the strait and confirmed attacks on vessels that defied its warnings, with traffic dropping approximately 70% and over 150 ships anchoring outside the strait.
- The closure has been described by analysts as the largest disruption to energy supply since the 1970s oil crisis, exceeding even the 2021 Suez Canal blockage and the 2024 Red Sea/Houthi crisis in severity.
- Approximately 20 million barrels per day (b/d) of crude and petroleum products — about 20% of global petroleum consumption and 25–27% of all seaborne oil trade — flowed through the strait in 2024.
- Around one-fifth of global LNG trade (primarily from Qatar) also transits the strait, and QatarEnergy declared force majeure on LNG exports following the March 4 Hormuz closure.
- No meaningful pipeline alternative can carry Hormuz-equivalent volumes: the Saudi Petroline carries ~4.8 mb/d and Abu Dhabi's pipeline ~1.5 mb/d — together less than a third of normal Hormuz throughput.
- The crisis underscores why the Strait of Hormuz has, for decades, been described as simply too vital an artery for the global economy to remain closed for long.
Static Topic Bridges
Strait of Hormuz — Geography, Dimensions, and Strategic Significance
The Strait of Hormuz is a narrow waterway connecting the Persian Gulf (to the west) to the Gulf of Oman and the Arabian Sea (to the east). It lies between the Iranian coast to the north and the Omani exclave of Musandam Peninsula to the south, with the UAE coast also bordering the Gulf of Oman side. At its narrowest, the strait is approximately 33 kilometres wide, but the navigable shipping channels are only about 3 kilometres wide in each direction, separated by a 3-km buffer zone — making it an extreme concentration point for global maritime traffic. Politically, the strait falls within the Exclusive Economic Zones (EEZ) of both Iran and Oman, giving Iran effective leverage over vessel transit.
- Narrowest width: ~33 km; navigable shipping lanes: ~3 km each direction.
- Flanked by: Iran (north), Oman's Musandam Peninsula (south), UAE coast (east).
- Oil throughput (2024): ~20 million b/d = ~20% of global petroleum liquids consumption.
- Seaborne oil share: ~25–27% of all global seaborne oil trade.
- LNG throughput: ~20% of global LNG trade (primarily Qatari).
- Location: 26°N latitude, connecting Persian Gulf to Gulf of Oman; length of transit ~170 km.
Connection to this news: Iran's geographic control of the northern shore of an already-narrow strait gives it unilateral leverage — even a credible threat to close the strait disrupts shipping insurance, reroutes vessels, and spikes oil prices before any physical blockade is fully established.
Global Oil Chokepoints and Their Hierarchy
Maritime chokepoints are narrow passages through which a disproportionate share of global seaborne trade must pass, creating strategic vulnerabilities. The world's five most critical oil chokepoints, as defined by the US Energy Information Administration (EIA), are: (1) Strait of Hormuz — 20 mb/d; (2) Strait of Malacca — 16–18 mb/d (Asia-bound oil/LNG); (3) Suez Canal/SUMED pipeline — 5–6 mb/d; (4) Bab-el-Mandeb — 4–5 mb/d (Red Sea entry/exit); (5) Danish Straits — 3–4 mb/d (Russian crude via Baltic). Hormuz is uniquely vulnerable because: it has no realistic pipeline alternative at scale, the states on both shores are in active or latent conflict, and the volumes passing through are double those of the next largest chokepoint.
- Strait of Hormuz: ~20 mb/d (world's largest oil chokepoint).
- Strait of Malacca: ~16–18 mb/d; primary route for Middle East oil to China, Japan, South Korea.
- Suez Canal: ~5–6 mb/d; recent Houthi disruptions led to Red Sea rerouting (2024).
- Bab-el-Mandeb: ~4–5 mb/d; connects Red Sea to Gulf of Aden.
- Pipeline alternatives to Hormuz: Saudi Petroline (~4.8 mb/d) + Abu Dhabi ADNOC pipeline (~1.5 mb/d) = ~6.3 mb/d, versus 20 mb/d through Hormuz — a ~13.7 mb/d gap.
- India's chokepoint exposure: depends on Hormuz (crude oil, LNG), Malacca (trade), Suez/Bab-el-Mandeb (Europe trade).
Connection to this news: The Hormuz closure exposes the irreplaceable nature of this chokepoint — even if Saudi and UAE pipelines run at capacity, over two-thirds of normal Hormuz oil flows have no alternative route, explaining why prices spike so sharply on even partial disruption.
UNCLOS and the Right of Innocent Passage
Under the United Nations Convention on the Law of the Sea (UNCLOS, 1982), all ships — including warships — enjoy the right of innocent passage through straits used for international navigation. Article 38 of UNCLOS recognises the right of transit passage through international straits, which is even broader than innocent passage: states bordering the strait cannot suspend or impede transit passage. Iran has ratified UNCLOS but has historically contested its application to the Strait of Hormuz, arguing that as a state bordering the strait, it has the right to control certain transits. The dispute over Iran's legal authority to close or impede the Hormuz transit route is a long-standing point of international maritime law.
- UNCLOS adopted: 1982; entered into force 1994; 168 parties (as of 2024).
- Article 17: Right of innocent passage through the territorial sea.
- Article 38: Right of transit passage through international straits — non-suspendable.
- Iran's position: claims Persian Gulf and Hormuz are partially under its jurisdiction; has periodically threatened to close the strait.
- India ratified UNCLOS: 1995.
- UNCLOS dispute settlement: International Tribunal for the Law of the Sea (ITLOS), Hamburg.
- Military ships: transit passage right applies even to warships under Article 38.
Connection to this news: Iran's confirmed attacks on vessels "defying orders" not to cross the strait represent a direct violation of UNCLOS transit passage rights — setting up a clash between Iran's claimed authority and the international maritime legal framework that has governed the strait for decades.
India's Strategic Petroleum Reserve (SPR) and Energy Security
India maintains Strategic Petroleum Reserves (SPR) as a buffer against supply disruptions, managed by the Indian Strategic Petroleum Reserves Limited (ISPRL). India has underground cavern storage at three locations: Visakhapatnam (1.33 MMT), Mangaluru (1.5 MMT), and Padur (2.5 MMT) — total capacity of 5.33 MMT. At current consumption rates (~222 million tonnes/year), this represents approximately 9–10 days of consumption. India's Phase II SPR expansion targets an additional 6.5 MMT at Chandikhol (Odisha) and Padur (expansion). The International Energy Agency (IEA) recommends members hold 90 days of net import cover; India's SPR alone covers less than 10 days, with the balance relying on commercial stocks.
- India's SPR locations: Visakhapatnam (1.33 MMT), Mangaluru (1.5 MMT), Padur (2.5 MMT) = 5.33 MMT total.
- Coverage: ~9–10 days of consumption at current rates.
- IEA recommended strategic reserve: 90 days of net import cover.
- ISPRL (Indian Strategic Petroleum Reserves Ltd): operates SPR infrastructure under MoPNG.
- Phase II expansion: Chandikhol + Padur additional 6.5 MMT — if completed, total ~11.8 MMT (~18–20 days).
- Commercial stocks: refineries and OMCs maintain additional ~30 days of inventory, giving India ~40–45 days combined cover.
Connection to this news: India's ~40–45 days combined SPR + commercial oil stock cover means a prolonged Hormuz closure (beyond 6 weeks) would create genuine supply stress — underlining the urgency with which India is monitoring the crisis and dispatching naval escorts to the Gulf of Oman.
Key Facts & Data
- Strait of Hormuz width at narrowest: ~33 km; navigable lanes: ~3 km each direction.
- Oil throughput (2024): ~20 million b/d = ~20% of global petroleum consumption; ~25–27% of seaborne oil trade.
- LNG throughput: ~20% of global LNG trade (mainly Qatar).
- Traffic drop in 2026 crisis: ~70%; 150+ ships anchored outside the strait.
- Pipeline alternative capacity: Saudi Petroline (~4.8 mb/d) + Abu Dhabi (~1.5 mb/d) = ~6.3 mb/d (vs. 20 mb/d through Hormuz).
- India's SPR: 5.33 MMT = ~9–10 days of consumption.
- QatarEnergy: declared force majeure on LNG exports after March 4 Hormuz closure.
- Described as the largest energy supply disruption since the 1970s oil crisis.