Washington : British Defence Secretary Gavin Williamson has said here the current Joint Comprehensive Plan of Action (JCPOA) was the "best possible" and "achievable" deal to address the West's concerns on Iran.
Williamson's comments on Tuesday were in sharp contrast with US President Donald Trump's abhorrence of the deal.
Speaking at the Atlantic Council, Williamson said "the JCPOA was a deal that we felt was the best possible deal that was achievable", Xinhua news agency reported.
"None of us has ever pretended it was a perfect deal, but actually it did deliver a number of important measures that I think everyone benefits from," he said.
"On the Iran deal, we really encourage the US along with all nations to get around the table and start discussing about actually ... how we have something that can work," he noted.
"We really just encourage the US to start talking to its partners and Iran in order to be able to find a route forward."
Williamson's remarks forged a sharp contrast with Trump, who on Monday signed an executive order to re-impose sanctions on Iran that had been lifted under the JCPOA, and blasted the deal he had left in May as a "horrible, one-sided" one that had failed to protect US national security.
In 2015, Iran and five permanent members of the UN Security Council- Britain, China, France, Russia and the US - plus Germany, signed the deal in Vienna. Under the accord, Iran agreed to limit its sensitive nuclear activities and allow international inspectors to examine in return for the lifting of crippling economic sanctions.
Trans-Atlantic division has escalated over the Trump administration's threat to impose the so-called secondary sanctions on companies that have business connections with Iran, many of which are from Europe.
Hours before Trump's announcement to re-sanction Iran, the European Union (EU), Britain, France and Germany said in a joint statement they would maintain economic ties with Tehran, and "are determined to protect European economic operators engaged in legitimate business with Iran".