What Happened
- Following US-Israeli military strikes on Iran, the Islamic Revolutionary Guard Corps (IRGC) announced the closure of the Strait of Hormuz and warned that any vessel attempting to transit would be fired upon.
- Crude oil prices surged on supply disruption fears, with Brent crude rising sharply as markets priced in a potential removal of approximately 20% of global daily oil supplies from the market.
- Tanker traffic through the Strait dropped by approximately 70%, with over 150 ships anchoring outside the waterway to avoid risk.
- India, which sources approximately 55% of its crude imports through the Strait, activated contingency plans, while Oil Minister Hardeep Singh Puri stated India's storage capacity could sustain 74 days of supply (refinery sources indicated actual usable inventory of 20-25 days).
Static Topic Bridges
The Strait of Hormuz: Geography and Strategic Significance
The Strait of Hormuz is a narrow waterway located between Iran to the north and Oman and the UAE to the south, connecting the Persian Gulf with the Gulf of Oman and the Arabian Sea. At its narrowest point, the strait measures approximately 30 miles (48 km) across. The navigable shipping lane is only about 2 miles wide in each direction, making it one of the world's most congested maritime passages.
It is widely considered the world's most important oil chokepoint. In 2024, approximately 20 million barrels per day (mb/d) of oil and petroleum products — equivalent to about 20% of global petroleum liquids consumption — transited the Strait. Additionally, around one-fifth of global LNG (Liquefied Natural Gas) trade passes through Hormuz, primarily from Qatar.
- Location: Between Iran (north) and Oman/UAE (south)
- Width at narrowest: ~30 miles (48 km); shipping lane: 2 miles in each direction
- Daily oil transit (2024): ~20 million barrels/day (~20% of global consumption)
- LNG transit: ~one-fifth of global LNG trade (primarily Qatari)
- Major alternative: Abu Dhabi Crude Oil Pipeline (ADCOP, 1.5 mb/d capacity) and Saudi Petroline (5 mb/d)
- Countries most dependent: China, India, Japan, South Korea
Connection to this news: The IRGC's closure threat demonstrates that Hormuz's geographic chokepoint status makes it a geopolitical pressure lever — even partial disruption has outsized global price and supply effects.
Maritime Choke Points: Global Strategic Geography
Maritime choke points are narrow straits or passages through which large volumes of global trade must pass, making them strategic vulnerabilities in both peacetime commerce and wartime conflict. UPSC has repeatedly tested knowledge of these passages.
Key global choke points include: - Strait of Malacca (between Malaysia/Indonesia/Singapore): ~25% of global trade, critical for East Asia's oil imports from Middle East - Bab-el-Mandeb (between Yemen/Djibouti): connects Red Sea to Gulf of Aden; ~10% of global oil trade - Suez Canal (Egypt): ~12% of global trade; already under stress due to Houthi attacks (2024-25) - Strait of Gibraltar (Spain/Morocco): Mediterranean-Atlantic gateway - Strait of Hormuz (Iran/Oman): 20% of global oil; most critical energy chokepoint
- India's vulnerability: Hormuz (crude oil) + Malacca (manufactured goods import) + Bab-el-Mandeb (Red Sea trade routes)
- Multiple simultaneous disruptions (Red Sea from Houthis + Hormuz from Iran) represent compounded logistics risk
- India's SAGAR doctrine (Security and Growth for All in the Region) and Indian Ocean Region (IOR) strategy seek to maintain freedom of navigation
Connection to this news: The Hormuz closure, combined with ongoing Houthi disruptions in the Bab-el-Mandeb/Red Sea, represents a simultaneous stress test on two of India's most critical import corridors — an unprecedented dual chokepoint crisis.
Iran's IRGC and the Weaponisation of the Strait
The Islamic Revolutionary Guard Corps (IRGC) was established after the 1979 Islamic Revolution as a parallel military force loyal directly to the Supreme Leader, independent of the regular Iranian Armed Forces. The IRGC controls Iran's naval forces in the Persian Gulf and has historically used the threat of Hormuz closure as strategic deterrence in geopolitical standoffs.
Iran's legal basis for asserting control over the Strait is contested: under UNCLOS (United Nations Convention on the Law of the Sea), which Iran has not ratified in full, the Strait of Hormuz qualifies as an international strait subject to the right of transit passage — meaning all states have the right of unimpeded passage in normal mode, without requiring coastal state permission.
- IRGC founded: 1979, answerable directly to Supreme Leader (not the President)
- IRGC Navy controls the Persian Gulf and Strait of Hormuz operations
- UNCLOS transit passage right: applies to international straits used for international navigation
- Iran's historical Hormuz threats: 2012 (nuclear sanctions standoff), 2019 (JCPOA tensions), 2026 (US-Israeli strikes)
- Iran has not fully ratified UNCLOS but participates in international maritime law discussions
Connection to this news: The IRGC's closure announcement leverages Iran's geographic control of the Strait as an asymmetric deterrence tool, directly challenging the UNCLOS principle of freedom of navigation through international straits.
Key Facts & Data
- Strait of Hormuz width (narrowest): ~30 miles; navigable channel: 2 miles each direction
- Daily oil transit (2024): ~20 million barrels (~20% of global consumption)
- LNG transit: ~one-fifth of global LNG trade
- Tanker traffic reduction: ~70% after IRGC closure warning
- Ships anchored outside Strait: 150+
- India's Hormuz exposure: ~55% of crude imports (~2.74 mb/d imports total)
- India's usable crude buffer: ~20-25 days (strategic + commercial stocks)
- ADCOP (Abu Dhabi Crude Oil Pipeline) bypass capacity: 1.5 mb/d
- Saudi Petroline bypass capacity: 5 mb/d (both only serve Persian Gulf producers, not all exporters)