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. We want to keep our journalism open and accessible and be able to keep providing you with news and analyses from the frontlines of Israel, the Middle East and the Jewish World. He used the government's Brexit rhetoric to support his case, saying that "global Britain" should use its "considerable diplomatic power and influence" to force a change of approach.
The first phase of the unilateral sanctions came into effect on Tuesday, targeting Iran's purchase of U.S. dollars, trade in gold and other precious metals as well as its automotive sector.
The sanctions are meant to hinder Tehran's acquisition of USA currency; its precious metals trade; bank transactions denominated in the Iranian rial; activities related to Iran's sovereign debt; and the country's automotive sector.
The UK, France, Russia, China, Germany and the European Union, which also signed the deal, have criticized Trump's decision and continue to back the agreement with Iran.
Britain and its European allies responded with dismay to the U.S. president's decision in May to pull out of the 2015 deal which relieved sanctions on Tehran in return for an end to Iran's military nuclear ambitions.More news: Rupee hits lifetime low of 70 per dollar
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Mr Johnson even goes over the head of Whitehall and urges British businesses directly to cut ties with Iran.
In a pointed intervention into an issue that has strained ties between the two allies, Woody Johnson said the United Kingdom should embrace Trump's hard-hitting sanctions on Iran, reimposed last week, and break with its European partners who are seeking to preserve the deal to curtail Iran's nuclear program.
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.
United States sanctions that had been eased by the Obama administration under the landmark 2015 nuclear deal, known as the Joint Comprehensive Plan of Action, took effect again Tuesday.
In recent weeks, Washington has slapped both Turkey and Iran with economic sanctions.