2,044 events on record Subscribe September 10, 2026
Standing Record home The Standing Record A non-partisan record of US democratic norms —
and the events that erode them.

U.S. strike enforcing Iran oil blockade kills three Indian sailors aboard tanker off Oman

On June 10, 2026, U.S. forces enforcing an executive-ordered naval blockade of Iranian oil exports fired on the Palau-flagged oil tanker M/T Settebello in the Gulf of Oman, killing three of its 24 Indian crew members — deck cadet Aditya Sharma, engine fitter Shivanand Chaurasiya, and chief engineer Patnala Suresh. U.S. Central Command said it disabled the tanker for violating the blockade as it allegedly attempted to carry Iranian oil, and has described the crews of targeted vessels as having repeatedly failed to comply with U.S. directions. India confirmed the deaths and summoned a senior U.S. diplomat on June 11 to lodge a formal protest, and the U.N. International Maritime Organization called the targeting of seafarers "unacceptable."

Part of: Trump Administration's Iran War Waged in Defiance of the War Powers Act

Jurisdiction
Federal
Location
Gulf of Oman (international waters)

Abuses documented

Actors

On June 10, 2026, U.S. Central Command fired on the Palau-flagged oil tanker M/T Settebello in the Gulf of Oman, enforcing the U.S. naval blockade of Iranian oil exports that began on April 13, 2026. Three of the 24 Indian crew members aboard were killed: deck cadet Aditya Sharma, engine fitter Shivanand Chaurasiya, and chief engineer Patnala Suresh. The three were first reported missing after the Wednesday strike and confirmed dead the following day, when their bodies were located and identified; the remaining crew were rescued. CENTCOM said it disabled the Settebello for violating the blockade as it allegedly attempted to transport oil from Iran, and has described the crews of struck vessels as having "repeatedly failed to comply" with directions from U.S. forces.

India confirmed the deaths and, on June 11, summoned a senior U.S. diplomat in New Delhi to lodge "a strong protest." India's shipping minister called the deaths "deeply unfortunate" and ordered the repatriation of the rescued crew and the deceased mariners' remains. The U.N. International Maritime Organization condemned the targeting of seafarers as "unacceptable." The Settebello was one of several vessels struck in a rapid sequence of blockade-enforcement attacks that week — U.S. forces also hit the tankers Marivex (June 8) and Jalveer (June 11) off Oman — but it was the Settebello strike that produced the confirmed civilian deaths recorded here.

The lethal enforcement of the naval blockade of Iran proceeds without congressional authorization for the underlying war, extending the separation-of-powers concerns already documented across this archive's record of the unauthorized Iran campaign and its war-powers maneuvers. Killing civilian merchant mariners in international waters during blockade enforcement raises laws-of-war and extrajudicial-killing questions distinct from strikes on Iranian territory. This is a discrete event — a different act, victims, and location from the contemporaneous strikes on Iran (recorded separately) — and belongs alongside the broader Iran war-powers entries as part of the same episode rather than merged into them.

Date note: CENTCOM logged the Settebello as disabled late June 9–10 ET; Al Jazeera and other outlets place the strike on Wednesday, June 10, local time, with the three deaths confirmed and India's formal protest lodged on June 11. This entry dates the event to the strike that caused the deaths (June 10) and notes the June 11 confirmation and diplomatic response.

Why we recorded this

The laws of war and longstanding U.S. practice sharply restrict the use of lethal force against civilian merchant sailors, and the Constitution gives Congress — not the president alone — the power to take the nation into sustained armed conflict. Here U.S. forces enforcing an executive-ordered naval blockade of Iran struck a civilian oil tanker in international waters and killed three Indian merchant mariners, in service of a war Congress never authorized. When deadly force is applied this way — against non-combatants, far from any declared battlefield, on the president's authority alone — both the legal limits on the use of force and Congress's constitutional control over war-making are weakened. This is recorded because the exercise of lethal power outside clear legal authority, and the sidelining of Congress's war powers, are erosions of democratic and legal restraint that belong in the record regardless of the conflict's merits.

Sources

  1. India says US hit another ship off Oman, confirms 3 dead in separate attack — Al Jazeera primary accessed June 12, 2026
  2. India voices "strong protest" over 3 of its mariners being killed in U.S. strikes on oil tankers — CBS News primary accessed June 12, 2026
  3. 3 Indian Sailors Dead After US Strike On Tanker Off Coast Of Oman — RFE/RL primary accessed June 12, 2026
  4. US strikes another tanker in Hormuz as it tightens Iranian port blockade — Euronews secondary accessed June 12, 2026
  5. IMO Calls Targeting of Seafarers 'Unacceptable' After Settebello Tanker Attack — Marine Insight secondary accessed June 12, 2026

See also