WASHINGTON — In a dramatic Pentagon briefing on Wednesday, March 4, 2026, U.S. Defense Secretary Pete Hegseth announced that American forces had sunk an Iranian warship in the Indian Ocean. Hegseth further alleged that the vessel was linked to a foiled Iranian plot to assassinate President Donald Trump.
Flanked by Chairman of the Joint Chiefs of Staff Gen. Dan Caine, Hegseth addressed a packed press briefing room. This marks the second major media appearance for the pair since the U.S. and Israel launched Operation Epic Fury, a coordinated military campaign against the Iranian regime that began five days ago.
The Briefing Room: A New Media Landscape
The briefing room was notably filled with the Pentagon’s newly installed resident press corps. Most traditional U.S. media outlets lost their permanent credentials last year after refusing to sign new rules that allow for expulsion if they report information not officially approved by the Department of War. However, several of these outlets appeared to have been granted temporary access for this specific announcement.
Naval Engagement off Sri Lanka
Hegseth detailed a significant naval engagement, stating that a U.S. Navy fast-attack submarine sank the IRIS Dena, a Moudge-class Iranian frigate, using a single Mark 48 torpedo.
“An American submarine sunk an Iranian warship that thought it was safe in international waters,” Hegseth told reporters. “Instead, it was sunk by a torpedo. Quiet death.”
The announcement aligns with reports from the Sri Lankan Navy, which launched a search-and-rescue operation earlier today approximately 40 nautical miles off the coast of Galle. While 32 sailors have been rescued, current reports indicate that roughly 140 personnel remain missing.
Retaliation for Assassination Plot
In a startling claim, Hegseth tied the naval strike directly to threats against the Commander-in-Chief. “Iran tried to kill President Trump,” Hegseth stated. “President Trump got the last laugh.”
Hegseth elaborated that the U.S. military had successfully “hunted down and killed” the leader of the unit allegedly responsible for orchestrating the assassination attempt. He characterized the sinking of the IRIS Dena as a decisive message that Iranian forces are vulnerable anywhere in the world.
Regional Escalation and Global Impact
The briefing comes as the Middle East remains on a knife-edge.
- Tehran Under Fire: Israeli forces reported hitting “security headquarters” and leadership targets across the capital.
- Khamenei Funeral Postponed: A scheduled three-day funeral ceremony for the late Supreme Leader Ayatollah Ali Khamenei (reportedly killed in earlier strikes) has been postponed indefinitely.
- Widening Conflict: Israel confirmed ongoing strikes against Hezbollah targets in Lebanon. Meanwhile, NATO defenses reportedly intercepted an Iranian missile over Turkey, and new attacks were noted in Saudi Arabia and Kuwait.
As the crisis intensifies, the United Kingdom has confirmed a repatriation flight for its citizens departing from Muscat, Oman, at 23:00 local time tonight.
