The US and Israel have bombed targets across Iran for a fourth day, as President Donald Trump declared that the country's air defenses, air force, navy and leadership were "gone", the BBC reported yesterday.

The U.S. military reportedly said it had destroyed command facilities, missile launch sites and airfields.

Meanwhile, Israel claims the Israel Defense Forces (IDF) destroyed a secret Iranian nuclear weapons development site on the northeast outskirts of Tehran on Tuesday.  

US President Donald Trump has said the US is seeking to destroy Iran's ballistic missile capabilities and navy, its ability to develop nuclear weapons, and its support for proxy groups in the region. He has also urged Iranians to use the attack to "take back your government".

The BBC reports that speaking at the White House yesterday, the US president said: "We've had a very powerful impact. Virtually everything they had has been knocked out now. Their missile count is going down."

Trump reportedly also repeated a claim that 49 Iranian leaders were "taken out" on Saturday and said there was "another hit today on the new leadership", without giving any details.

When asked by a reporter who he would like to take over after the conflict, Trump replied: "Most of the people we had in mind are dead."

Iranian authorities did not comment. But explosions were reported across Iran, where the Red Crescent has said 780 people have been killed since Saturday, according to the BBC.

Iran has reportedly responded to the strikes by launching deadly missile and drone attacks on Israel and Gulf states hosting US bases.

A drone hit a car park adjacent to the US consulate in Dubai on Tuesday evening and "set off a fire in that place", US Secretary of State Marco Rubio said.

It came hours after two drones hit the US embassy in Saudi Arabia's capital Riyadh and caused a "limited fire", according to the Saudi defense ministry.

The US and Israel launched a joint attack on Iran on February 28, killing Supreme Leader Ayatollah Ali Khamenei and senior officials in the first wave of strikes.