UK Foreign Secretary Boris Johnson has challenged the US to show there is a better alternative to the deal with Iran that limits its nuclear programme.
Following talks in Brussels with his Iranian and European counterparts, he said the 2015 accord was a considerable accomplishment that was preventing Iran acquiring nuclear weapons.
According to BBC News, Mr. Johnson stressed that Iran was fully in compliance with it.
US President Donald Trump wants to amend the deal or withdraw from it.
In October, he refused to recertify for Congress that Iran was complying, accusing it of “not living up to the spirit” of the agreement.
He is expected to decide tomorrow whether to extend relief from the US economic sanctions imposed on Iran that former President Barack Obama authorised.
The sanctions had cut Iran’s central bank out of the international financial system and imposed penalties for buying Iranian oil, crippling the country’s economy.