Sources told CNN that Tehran had begun laying mines in the key waterway. Meanwhile, fresh airstrikes struck a Tehran residential area, the Iranian Red Crescent said.

Here’s the latest
• Focus on strait: The US military said it destroyed Iranian naval ships — including 16 minelayers — near the Strait of Hormuz. Sources told CNN earlier that Tehran has begun laying mines in the waterway, the world’s most important energy chokepoint, through which about one-fifth of all crude oil travels.
• Tehran airport: Video geolocated by CNN shows explosions coming from the direction of Tehran’s Mehrabad International Airport. This comes as the Israeli military said it had begun a new wave of strikes on Tehran in the early hours of Wednesday.
• Baghdad target: A suspected Iranian drone hit a US diplomatic facility in Iraq on Tuesday, two sources told CNN. Iran has been targeting US military and diplomatic installations as it retaliates against ongoing US and Israeli military operations.
• “Most intense”: Iran’s revolutionary guards claimed they launched their “most intense and heaviest operation” since the start of the war, state media reported.
