"The United States remains concerned with Iran's development of space launch vehicles, which pose a significant proliferation concern," a State Department spokesperson said.
But amid talks in Vienna on reviving a 2015 nuclear accord, she said, "We are seeking a mutual return to full compliance with the deal."
Iran announced Thursday it has carried out a new space launch, in a move likely to irk Western powers amid tough talks on reviving a 2015 nuclear deal.
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