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International Relations June 13, 2026 6 min read Daily brief · #9 of 13

Violations of U.S. blockade in Strait of Hormuz will not be tolerated: Rubio tells Jaishankar

US Secretary of State Marco Rubio conveyed directly to External Affairs Minister S. Jaishankar that all commercial vessels must immediately comply with order...


What Happened

  • US Secretary of State Marco Rubio conveyed directly to External Affairs Minister S. Jaishankar that all commercial vessels must immediately comply with orders from US forces enforcing the naval blockade in the Strait of Hormuz.
  • Rubio stressed that violations of the US blockade and the illicit transport of Iranian oil would not be tolerated, framing the blockade as necessary to "uphold peace and security" in the region.
  • The communication came after India had summoned the US Chargé d'Affaires Jason Meeks to lodge a formal protest over US Navy strikes on commercial vessels with Indian crews off the Oman coast.
  • Jaishankar responded by reiterating India's position that lethal action against commercial shipping is not justified under international law, even in the context of the blockade.
  • India has been pursuing diplomatic channels to protect the freedom of navigation for commercial vessels and the safety of Indian seafarers operating in the Gulf region.

Static Topic Bridges

The 2026 United States naval blockade of Iran was established on April 13, 2026, as part of the wider US-Israel military campaign against Iran that began on February 28, 2026. The blockade prohibits commercial transit to and from Iranian ports, with US naval forces empowered to intercept, disable, or strike non-compliant vessels. The legal foundation of unilateral naval blockades is contested under modern international law.

  • Under traditional laws of naval warfare, a belligerent state may impose a blockade on enemy ports if the blockade is (a) effective, (b) impartial, (c) declared in advance, and (d) does not interfere with neutral states' access to their own ports.
  • The 1909 Declaration of London (not binding) codified blockade rules that are now reflected in customary international humanitarian law.
  • Modern international law scholars debate whether unilateral blockades that intercept third-country (neutral) vessels violate the UN Charter's prohibition on the use of force (Article 2(4)) against states not party to the conflict.
  • The blockade has caused a 95% reduction in crude oil tanker traffic through the Strait of Hormuz, with severe implications for global energy markets.
  • The US has framed the blockade as an exercise of belligerent rights in an armed conflict, while neutral states including India contest its application to their commercial vessels.

Connection to this news: Rubio's warning to Jaishankar asserts US authority to treat all vessels — including those crewed by Indian nationals — as subject to blockade enforcement, regardless of those vessels' neutrality or the flag state's non-belligerent status.

The Strait of Hormuz as a Global Chokepoint

The Strait of Hormuz, located between Iran to the north and the UAE and Oman to the south, is the world's most critical maritime chokepoint for energy transit. It connects the Persian Gulf — where the bulk of Saudi Arabian, Iraqi, Kuwaiti, Emirati, and Iranian oil production is loaded — to the Indian Ocean and onward to global markets.

  • Approximately 20–21 million barrels of oil per day (about 20% of global petroleum) transited Hormuz in pre-conflict periods.
  • The strait is approximately 54 km wide at its narrowest point, with two navigable channels of roughly 3 km each, separated by a 3 km median zone.
  • UNCLOS Article 38 guarantees transit passage through international straits — a right that "shall not be impeded" — applicable to all ships and aircraft.
  • Under UNCLOS Part III (Articles 37–44), coastal states (Iran and Oman in this case) cannot suspend transit passage even in peacetime or under security emergencies.
  • The Strait of Hormuz is also a critical LNG transit corridor: Qatar exports large volumes of LNG through it, as does the UAE.

Connection to this news: India's insistence on the right of commercial navigation through the Strait is grounded in UNCLOS transit passage rights. Rubio's demand that vessels comply with US blockade orders directly conflicts with this framework, placing India in a diplomatic bind between its treaty obligations and its relationship with the US.

India's Strategic Autonomy in Conflict Zones

India's foreign policy doctrine of "strategic autonomy" — articulated formally in successive foreign policy statements — holds that India will determine its positions on international disputes based on its own national interests rather than alignment with any bloc. This has been tested repeatedly in situations where US and Russian or Iranian interests conflict.

  • India abstained on multiple UN General Assembly resolutions on the 2022 Russia-Ukraine conflict, reflecting strategic autonomy.
  • India continued purchasing discounted Russian crude oil after the 2022 invasion of Ukraine, resisting US pressure to join sanctions.
  • Similarly, India maintained Chabahar Port cooperation with Iran even as US sanctions tightened, receiving a specific sanctions waiver from the US Treasury until 2024.
  • India's position on the Hormuz blockade follows this pattern: New Delhi protests the strikes on Indian vessels and advocates for commercial navigation rights without formally condemning the US campaign against Iran's nuclear programme.
  • India is also a member of the Quad (with the US, Japan, and Australia), making outright confrontation with Washington diplomatically costly.

Connection to this news: The Rubio-Jaishankar exchange illustrates the pressure points of strategic autonomy — India is simultaneously a US security partner (Quad) and a country with vital commercial interests in the Gulf that conflict with US enforcement actions. Jaishankar's pushback signals that strategic autonomy has real limits India is willing to defend publicly.

India-US Strategic Partnership and Its Fault Lines

The India-US relationship, described formally as a "Comprehensive Global and Strategic Partnership," has deepened substantially since the civil nuclear agreement of 2008. Defence cooperation under BECA, LEMOA, and COMCASA (the Foundational Agreements) has given both militaries logistical interoperability. However, the relationship continues to carry structural tensions over India's independent foreign policy choices.

  • LEMOA (Logistics Exchange Memorandum of Agreement, 2016) allows reciprocal use of military logistics facilities.
  • COMCASA (Communications Compatibility and Security Agreement, 2018) enables encrypted communication interoperability.
  • BECA (Basic Exchange and Cooperation Agreement for Geo-Spatial Cooperation, 2020) provides India access to US geospatial intelligence.
  • Despite these agreements, India has not joined the US-led sanctions regime against Russia or Iran, preserving its energy and strategic options.
  • The 2026 Hormuz crisis marks a new stress test: for the first time, US military action directly killed Indian civilians, escalating the diplomatic stakes beyond abstentions and statements.

Connection to this news: Rubio's warning to India — framed as a demand for compliance — and Jaishankar's public pushback represent a new inflection point in the India-US relationship. India is asserting that being a strategic partner does not translate into subordination of its citizens' lives and its commercial rights at sea.

Key Facts & Data

  • The US naval blockade of Iranian ports was imposed from April 13, 2026.
  • The Strait of Hormuz is approximately 54 km wide at its narrowest; only two 3-km-wide navigable channels exist.
  • Approximately 20% of global petroleum transits Hormuz daily.
  • UNCLOS Article 38 guarantees non-suspendable transit passage rights through international straits.
  • India ratified UNCLOS in 1995.
  • The India-US Comprehensive Global and Strategic Partnership is underpinned by three foundational agreements: LEMOA (2016), COMCASA (2018), BECA (2020).
  • The India-US civil nuclear agreement (123 Agreement) was signed in 2008, enabling civilian nuclear cooperation.
  • Indian seafarers number approximately 150,000+ in international maritime service.
  • Three Indian seafarers were killed when MT Settebello was struck off Oman on June 10, 2026.
On this page
  1. What Happened
  2. Static Topic Bridges
  3. The US Naval Blockade of Iran and Its Legal Basis
  4. The Strait of Hormuz as a Global Chokepoint
  5. India's Strategic Autonomy in Conflict Zones
  6. India-US Strategic Partnership and Its Fault Lines
  7. Key Facts & Data
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