US President Donald Trump rejected a seven-day ceasefire proposal from Iran and told aides that he expects US bombing of Iran to resume after the November midterm elections, according to US officials cited in media reports.

Iran's proposal would have had the United States lift its naval blockade of Iranian ports, ease sanctions on Iranian oil exports and observe a ceasefire that includes Lebanon. In return, Iran would reopen the Strait of Hormuz and resume negotiations with Washington on its nuclear programme.

Trump has said Tehran is seeking a deal after the midterms that would dismantle its nuclear programme. The supplied account did not include further details on the status of the proposal or any response from Iran.