Johnson's comments come less than a week after the Trump administration on Tuesday reimposed a raft of sanctions on Iran that affect, among other things, the purchase or acquisition of USA dollars by the Iranian government, the country's auto industry and trade in gold or precious metals.
Iran's economy has come under intense strain since U.S. President Donald Trump pulled out of the 2015 nuclear deal that Tehran signed with six world powers and reimposed sanctions that had been eased under the terms of the accord.
"Until then, America is turning up the pressure and we want the United Kingdom by our side". Joe Kaeser, the chief executive of German industrial conglomerate Siemens, summed up the harsh realities of U.S. economic influence over European business when he told CNN in May that the company would stop all new deals in Iran, following Trump's withdrawal from the nuclear deal. The envoy also delivered a clear ultimatum to British businesses, instructing them to stop trading with Iran or face "serious consequences" when it comes to trade with the United States. "We are asking global Britain to use its considerable diplomatic power and influence and join us as we lead a concerted global effort toward a genuinely comprehensive agreement", Johnson said.
Trump says progress made toward trade deal with Mexico
Instead, Trump and his administration officials have discovered they have a lot of common ground and negotiations have gone well. Once Canada returns to the talks, the continental partners are expected to shift their focus to other tough, unresolved issues.
"It's a disloyal attitude towards the honest position of Iran and the blood of the martyrs this country has spilt to defend the land of Iraq" against extremists, said Moujtaba al-Hussein.
A week ago Britain signed on to a joint statement with other EU countries that pledged to press on with a strategy to lessen the impact of the US sanctions on European businesses.
Asked for comment on Johnson's op-ed, the British foreign office referred to comments made last week by Middle East Minister Alistair Burt. "It is a commercial decision for companies whether they continue to work in Iran".
He said this statement should be seen as a warning by the other side against discarding the nuclear deal, stressing that Iran can even show more extensive progress in other parts of its nuclear activities to go beyond the previous levels.