A US submarine sank an Iranian naval vessel off Sri Lanka, killing at least 87. Washington says the strike occurred in international waters and targeted a hostile ship; legal experts dispute the justification. Sri Lanka is monitoring an oil slick as regional navies raise alert.

The US and Israel intensified coordinated operations in Iran, hitting command, missile and drone infrastructure. Washington signalled more action may follow; Tehran said defences responded. Reports suggest hundreds of deaths, raising concern over regional escalation.

Escalating tensions followed a US–Israeli operation in Iran, prompting a widespread response across the region. Hundreds are reported killed, with incidents in the Gulf of Oman, the UAE and at a UK base in Cyprus. Governments warn of further action as air defences and diplomacy intensify.

Regional tensions intensified after a second day of military action struck targets in Iran, including Tehran, with civilian casualties reported. Oil prices jumped and risks to Gulf shipping grew. An emergency UN meeting convened as Washington indicated it remained open to talks.