A senior Iranian security official said on Monday that progress in talks to salvage Iran's 2015 nuclear deal was becoming "more difficult" as Western powers only "pretended" to come up with initiatives.
The indirect talks in Austria between Iran and the United States resumed last week after a 10-day break. Delegates have said the talks have made limited progress since they resumed in November after a five-month hiatus prompted by the election of hardline Iranian President Ebrahim Raisi.
"The work of Iranian negotiators towards progress is becoming more difficult every moment ... while Western parties 'pretend' to come up with initiatives to avoid their commitments," Ali Shamkhani, secretary of Iran's Supreme National Security Council, said on Twitter.
Mikhail Ulyanov, Russia's envoy to the talks in Vienna, said on Twitter hours earlier: "Significant progress has been made in the course of negotiations."
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