Iran has warned that the United States should expect 'heavy consequences' for striking its nuclear sites, issuing a threat that its entry into the conflict with Israel will 'expand the scope of legitimate targets'.

'Mr. Trump, the gambler, you may start this war, but we will be the ones to end it,' Iran's military command spokesperson Ebrahim Zolfaqari said in a recorded statement today.

Trump declared last night that 'monumental damage' has been done 'to all nuclear sites in Iran' as he called for a regime change in the Islamic country.

The US president wrote on his Truth Social page that satellite images he obtained showed the Iranian nuclear facilities were 'obliterated,' and noted that the most damage 'took place far below ground level.'

'Why wouldn't there be a regime change,' Trump went on to question - even though he and UK Prime Minister Keir Starmer had earlier urged Supreme Leader Ayatollah Khamenei to 'return to the negotiating table as soon as possible.'