At the same time, the United States has resumed a naval blockade targeting Iranian ports.

US Central Command said, airstrikes are being carried out against Iranian military facilities to reduce Tehran's capability to attack commercial shipping. 

Iranian state media reported explosions in several southern areas, including Bushehr. 

Meanwhile, Tehran claimed it had launched attacks on US military installations in Bahrain and Jordan. 

Trump also warned that military operations would continue unless Iran returns to negotiations, adding that more strategic targets could be struck if necessary.