A "Trump deal" is needed to replace the unravelling Iran nuclear deal, the Prime Minister has said.
The US left the agreement in 2018, while the UK, France and Germany have accused Iran of breaching the terms of the agreement made in 2015.
Calling for a US-backed deal, Boris Johnson said one of the problems US President Donald Trump had with the deal was that it was negotiated by his predecessor, Barack Obama.
Mr Trump previously described it as "a horrible, one-sided deal" which held the US to "nuclear blackmail".
Mr Johnson suggested a "Trump deal" could fix the current crisis which comes amid heightened tensions between America and Iran.
"If we are going to get rid of it then we need a replacement," Mr Johnson said on BBC Breakfast.
"The problem with the agreement is that from the American perspective it's a flawed agreement, it expires, plus it was negotiated by President Obama. From their point of view it has many, many faults.
"If we are going to get rid of it, let's replace it and let's replace it with the Trump deal.
"That's what we need to see. I think that would be a great way forward.
"President Trump is a great deal-maker - by his own account and many others - let's work together to replace the JCPOA [Joint Comprehensive Plan of Action] and get the Trump deal instead."
The pact was designed to ease sanctions on Iran in return for Tehran agreeing to restrictions on its activity to ensure it did not develop a nuclear weapon.
In the latest indication of problems with the deal, foreign ministers from the UK, France and Germany issued a joint statement - confirming they were beginning a dispute resolution process.
The ministers insisted they were not following Mr Trump's policy of "maximum pressure" on Iran, however, they said they had "no choice" but to act.
Foreign Secretary Dominic Raab is set to update MPs in a Commons statement on Tuesday afternoon.
Tensions between Iran and the west reached boiling point after a US air strike killed a top Iranian general.
Iran vowed revenge for the attack and launched air strikes at US military bases in Iraq that were also housing British troops.
Mr Johnson said he "did not envisage" any further escalation in tensions, adding: "Let's dial this thing down."
Cover image: Boris Johnson leaving Downing Street (Picture: PA).