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Strait of Hormuz, Chokepoint for 20% Global Oil, Effectively Closed After US-Iran War Breaks Out in Feb 2026

Intl. RelationsSecurity & DefenceEconomyCORE
Target:UPSC GS-IIMPSCSSC GATeachingPrelims HighMains HighStatic GK Link
05 May 2026
~2 min
Source: Indian Express
Key Data:Nearly 20% global oilFebruary 28, 202670% traffic reductionAt least 16 attacks
Bodies:IRGC (Islamic Revolutionary Guard Corps)US Navy
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What This Article Covers

1.The Strait of Hormuz, carrying nearly 20% of global oil and gas, became practically unusable after the US-Iran war outbreak in February 2026, leading to a 70% drop in shipping traffic.

2.A 'dual blockade' emerged: Iran controlled access via threats and selective permissions for 'friendly' nations, while the US imposed a naval blockade on Iranian trade, intercepting vessels.

3.The closure demonstrates how geopolitical conflict can paralyze a critical trade artery without a formal declaration, impacting global energy security, insurance markets, and supply chains.

The Big Picture
Prelims · HighMains · High

A military conflict between the US and Iran in early 2026 led to the effective closure of the Strait of Hormuz, a critical global oil chokepoint, not by formal blockade but through military risk, attacks, and surging insurance costs. This disruption highlights the geopolitical vulnerability of global energy supply chains and the concept of 'chokepoints' in international relations, a key topic for mains and prelims.

Exam Lens

Quick Exam Facts From News

Global Oil ShareNearly 20% (one-fifth)
Conflict Start DateFebruary 28, 2026
Traffic Drop (Early March)70% reduction
Confirmed Attacks by March 12At least 16
Countries Granted Access by IranChina, India, Russia, Pakistan, Iraq

1-Minute Revision

  • ›Global Oil Share: Nearly 20% (one-fifth)
  • ›Conflict Start Date: February 28, 2026
  • ›Target this Data: Strait of Hormuz carries nearly 20% (one-fifth) of global oil.
  • ›Target this Nodal Body: Islamic Revolutionary Guard Corps (IRGC) - Iran's military force issuing warnings.
  • ›Target this Legal Point: The distinction between a 'formal blockade' and 'effective closure' due to risk.

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Q1Static LinkageEasy

The Strait of Hormuz, a critical maritime chokepoint, is bordered by which of the following countries?

Q2Statement-basedHard

Consider the following statements regarding the Strait of Hormuz disruption in 2026:

1. The crisis began with coordinated air strikes by the US and Israel under 'Operation Epic Fury' on February 28, 2026.

2. Iran formally declared a legal blockade of the strait under international law on March 2, 2026.

3. Despite the closure, Iran allowed selective passage to ships from countries including China, India, and Russia.

Which of the statements given above is/are correct?

Q3Data-centricMedium

According to the article, what was the approximate early reduction in shipping traffic through the Strait of Hormuz in March 2026?

Q4Application/ImpactMedium

What was the primary mechanism that led to the effective closure of the Strait of Hormuz, as described in the article?

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