Iran's deputy foreign minister says Tehran has received "strong support" from all remaining parties to the landmark 2015 nuclear deal with his country since the US pulled out unilaterally last year.
Abbas Araghchi told reporters in Vienna on Wednesday that Germany, France, Britain, Russia and China have "acknowledged that the deal can only survive if Iran can receive the benefits of the deal," and remain committed to making it work.
Araghchi spoke after meeting with the remaining signatories to the Joint Comprehensive Plan of Action, or JCPOA, which provides Iran with sanctions relief in exchange for limiting its nuclear program.
He praised the Europeans' establishment in January of INSTEX, a barter-type system designed to allow their businesses to skirt direct financial transactions with Iran and thereby evade possible US sanctions.
On Wednesday, Iran's president said that there was no chance of negotiations or compromise with the United States, allegedly because Washington is seeking to topple the government in Tehran.
In a televised speech, Hassan Rouhani said "the United States says Iran should change" back to the way the country was before the 1979 Islamic Revolution, when it was ruled by a US-supported monarchy.
"We say we won't go back," Rouhani said at a gathering in the northern city of Lahijan.
He said the differences between Iran and the US are so wide, they are "neither negotiable nor can there be a compromise."
However, tensions between the two countries have been heightened after Washington withdrew from the 2015 nuclear deal last year and re-imposed sanctions on Iran, which have particularly hurt Iran's vital oil industry.
Rouhani said his country is in an economic war because of these US sanctions, and that giving in to US demands means "losing all historical achievements" including freedom, independence and democracy.