Tehran: Tehran threatened on Monday to inflict “serious” damage in retaliation for US strikes on the Islamic republic’s nuclear facilities, as the Iran-Israel war entered its 11th day despite calls for de-escalation.

Aerial assaults meanwhile raged on, with air raid sirens sounding across Israel and AFP journalists reporting several blasts were heard over Jerusalem.

The Israeli military said it had struck missile sites in western Iran as well as “six Iranian regime airports” across the country, destroying fighter jets and helicopters.

President Donald Trump said US warplanes used “bunker buster” bombs to target sites in Fordo, Isfahan and Natanz, boasting the strikes had “obliterated” Iran’s nuclear capabilities.

Other officials said it was too soon to assess the true impact on Iran’s nuclear program, which Israel and some Western states consider an existential threat.