A United States submarine fired a torpedo that sank an Iranian Navy ship in the Indian Ocean off Sri Lanka, killing at least 87 sailors, marking the first time since World War II an American submarine has sunk an enemy vessel with a torpedo. The Pentagon reports sweeping success in the first four days of military operations, with Iranian ballistic missile launches down 86 per cent and drone attacks down 73 per cent, while Israel conducts strikes on Tehran following the killing of Iran's Supreme Leader Ayatollah Khamenei. Iran has attempted to widen the conflict by targeting Turkey, a NATO member, with missiles that were shot down by NATO air defences, while more than 1,000 Iranians have been killed in the war according to Iran's Red Crescent.

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