Rouhani raised concerns over what Tehran sees as Europe's lackluster approach to saving the landmark agreement during phone calls with German Chancellor Angela Merkel and French President Emmanuel Macron on Thursday.
What Europe has so far offered Iran to make up for the economic damage inflicted on the country by the US withdrawal from the deal in May is insufficient, Rouhani told Merkel, calling the European proposal "disappointing" and lacking any specifics.
"Unfortunately, the package lacked a clear and practical plan or certain methods for continuation of cooperation. It set forth a series of general obligations just like those contained in previous EU statements," Rouhani was cited by IRNA news agency as saying.