Since Israel began its concerted attack on Iran on Friday, calls for regime change in Iran have grown louder – from hawks in the US Congress to Israeli officials and some Iranian activists abroad.

A White House official said President Trump had decided not to sign onto a statement drafted for Group of 7 allies that urges restraint from both Israel and Iran, which have been trading attacks for days.

U.S. refueling aircraft and warships have been dispatched to safeguard U.S. interests as the deadly conflict shows no sign of abating.

The United States advised Americans not to travel to Israel after another wave of Iranian missile attacks struck the country.

Israel on Sunday hit targets in Tehran, including the Defense Ministry and sites it claims are tied to Iran's nuclear program.

Israel and Iran have continued to trade heavy missile strikes overnight as Donald Trump threatens to respond 'at levels never seen before' if Tehran attacks US bases.Posting on Truth Social, the US president said his forces had “nothing to do with the attack on Iran,

Israeli forces stepped up bombing of Iranian cities, while Iran pierced Israeli air defences with a successful volleys of retaliatory missile strikes.