Analysts say it would be difficult, if not impossible, to bring down the Iranian system with US-Israeli air power alone.

Follow live updates and the latest news coverage as Iran vows revenge for the U.S. warship sinking, Trump and Israel strike Tehran, and Americans are stranded in the Middle East.

The Trump administration has defended the war on Iran by arguing that the Middle Eastern country posed a significant threat to the United States. Officials argued that Iran was nearing the development of a nuclear weapon and ballistic missiles capable of reaching U.S. territory.

The Trump administration and its allies in Congress are presenting a shifting new justification for the U.S. attack on Iran.

Meanwhile, a flight chartered by the UK government to bring Britons back from Oman did not take off as planned, and will instead depart today, the BBC understands.

Israel sent troops into Lebanon as the U.S.-Israeli war with Iran widened, and some of Iran's Gulf neighbors warned that Iran's retaliatory fire could draw them into the spreading conflict.

Many of President Trump’s allies have urged him and his Make America Great Again movement to shift away from their close ties to Israel and military entanglements in the Middle East.

Trump added that he had ordered oil tanker insurance support, a move that marks an aggressive step to try to contain soaring energy prices.