[ANALYSIS] Iran War enters Day 6; IRGC claims US-linked tanker hit, Gulf incidents continue

OVERVIEW

Israel launched a large-scale wave of strikes on Tehran, with additional strikes reported in and around Karaj, while continuing operations against Hezbollah-linked infrastructure in Beirut.
Iran launched further missile attacks toward Israel; air raid sirens sounded in Tel Aviv and Jerusalem overnight, with interceptions reported and no immediate casualty confirmation in early updates.
Shipping risk intensified in the northern Gulf: a tanker explosion and oil spill was reported off Kuwait; separately, Iran’s IRGC claimed it hit a US-linked oil tanker in the northern Gulf and that it was on fire (not independently confirmed at the time of reporting).
The Strait of Hormuz remains effectively shut for normal commercial transit, with maritime activity heavily disrupted.
US domestic politics: the US Senate blocked a war-powers measure that would have required congressional authorisation to continue the strikes (53–47).
Western officials say the pace of Iranian ballistic missile launches is declining, suggesting the US–Israeli campaign targeting launchers and stockpiles is degrading Iran’s strike capability.

IRIS Dena sunk (occurred Wed 4 Mar / Day 5): the Iranian warship was torpedoed and sank off Sri Lanka.
Day 6 aftermath: survivors were pictured receiving treatment in Sri Lanka while recovery operations continued off the coast near Galle. At least 87 sailors were reported killed; 32 survivors were rescued and treated at Galle National Hospital, with additional crew still reported missing in some updates.
Iranian response: Iran’s foreign minister condemned the strike as an “atrocity at sea” and warned the US would “bitterly regret” the precedent.
Second Iranian vessel: Sri Lankan authorities said another Iranian vessel had sought an urgent port call, with the situation still under assessment.

Tehran / Karaj: Israel announced a “large-scale wave of attacks” against Tehran targeting regime infrastructure; smoke plumes and explosions were reported across the capital, with additional blasts reported around Karaj.
Qom: Israel said it struck a ballistic missile launcher described as “ready to fire at Israel”.
Isfahan: Israel reported striking an Iranian air defence system.
Lebanon: Israel continued striking Hezbollah-linked sites in and around Beirut (including southern suburbs) following evacuation warnings and ongoing cross-border hostilities. Lebanese media reported an Israeli drone strike killing a Hamas official in northern Lebanon. Separate strikes near Beirut reportedly killed three people and injured six.

Israel: Iran launched multiple missile waves overnight; sirens sounded in Tel Aviv and Jerusalem, with interceptions reported.
Gulf incidents and alerts:
- Bahrain: explosions reported over Manama.
- Qatar: explosions heard in Doha; authorities began evacuating residents living near the US Embassy in Doha as a precautionary measure.
- Saudi Arabia: Saudi authorities reported intercepting cruise missiles near Al-Kharj and multiple drones.
Turkey: On Wednesday Turkish/NATO-integrated air defence systems intercepted a missile approaching Turkish airspace; Iran denied launching missiles toward Turkey. NATO Secretary General Rutte said Article 5 is not in order here.
Azerbaijan: Azerbaijani officials said Iranian drones struck Nakhchivan, damaging an airport terminal and injuring two civilians; Azerbaijan summoned Iran’s ambassador.

Tanker explosion off Kuwait:

A tanker at anchor off Kuwait reported a large explosion on the port side, an oil leak from a cargo tank and water ingress.
No fire was reported and the crew were declared safe; a small craft was seen leaving the area shortly after the explosion.

Iranian state media and the IRGC claimed they struck a US-linked oil tanker in the northern Gulf and that it was burning.
This claim was not independently confirmed in the immediate reporting window.

Maritime disruption continues to severely impact commercial transit through the Strait of Hormuz.
The UN’s maritime body said roughly 20,000 seafarers are effectively trapped by the security environment in and around the Gulf shipping lanes.

Shipping threats broadened: an IRGC commander said US, Israeli and European vessels are not allowed in the Strait of Hormuz.

US war powers vote: the Senate vote 53–47 blocked the measure requiring congressional approval for continued military action. The vote fell almost entirely along party lines, signalling strong Republican support for the ongoing conflict.
Iran leadership transition: Tehran has not formally confirmed a successor to the slain Supreme Leader; Mojtaba Khamenei continues to be widely cited as the leading frontrunner.
Iran wartime posture: Iranian media reported the government is shifting toward governance structures designed for a prolonged war footing.
Kurdish front: reports suggested Iranian Kurdish armed groups discussed possible cooperation with the US; Kurdish regional authorities denied militants crossed into Iran. Iran also struck Kurdish opposition positions in Sulaymaniyah, Iraq.
Regional escalation risk: Arab intelligence sources warned Yemen’s Houthis may launch missile and drone attacks against targets in Saudi Arabia.

UK evacuation: the first UK-chartered evacuation flight from Oman was delayed due to technical issues and is expected to depart later.
Qatar / Doha: evacuation measures were introduced near the US Embassy; airline operations remain constrained.
Qatar Airways: relief flights have been scheduled from Muscat and Riyadh to European destinations.
Israel aviation: Ben Gurion Airport has begun a phased reopening, primarily for repatriation flights.