A senior EU official is reporting no progress in the newest international push to persuade Iran to curb activities that could be used to make nuclear weapons, leaving the resumption of high-stakes negotiations with Tehran in doubt, diplomats said Friday.

A meeting Tuesday between senior EU envoy Helga Schmid and Ali Bagheri, Iran’s deputy nuclear negotiator, was an attempt to restart top-level nuclear talks between Tehran and six world powers after the last round in Moscow fizzled on June 19.

EU officials said Thursday that Ashton will be talking to top Iranian nuclear negotiator Saeed Jalili soon on the next steps. That potentially could result in agreement on a new six-power Iran round.