Araghchi made the remarks in a phone call with International Atomic Energy Agency (IAEA) chief Rafael Grossi, state news agency IRNA reported. The call came after the UN Security Council failed to adopt a resolution that would have extended sanctions relief under the 2015 nuclear deal. Araghchi criticized the "political atmosphere" at a recent IAEA board meeting, saying Iran's cooperation with the watchdog remained within international regulations. Iran held several rounds of nuclear negotiations with Washington earlier this year, but halted both the talks and cooperation with the IAEA after Israeli strikes -- joined by the United States -- hit Iranian nuclear facilities in June. Signed by Iran and six world powers in 2015, the JCPOA has been under strain since the United States unilaterally withdrew in 2018, prompting Tehran to gradually scale back compliance.