A US lawmaker has expressed concerns about Iran’s not turning on the UN watchdog IAEA’s monitoring cameras until a nuclear deal is revived. 

Florida's Democratic Representative Ted Deutch said on Monday that Tehran’s decision is extremely worrying, underscoring his “deep concern about how any nuclear deal with Iran can be verifiable and enforceable.”

He described the decision as “particularly egregious” after Rafael Mariano Grossi, the director general of the International Atomic Energy Agency (IAEA), reiterated that Iran's nuclear program is "galloping ahead," and saying that the IAEA would lose its understanding of the state of Iran's program if the cameras were not restored in three or four weeks, a window that has since passed. 

“Moreover, Iran also just declared that it will not answer IAEA’s outstanding questions about uranium particles found at undeclared nuclear sites in Iran, directly contradicting the censure resolution that was overwhelmingly passed by the IAEA Board of Governors last month,” Deutch added. Tehran’s relations with the agency have particularly soured since the June’s resolution.

The US congressman highlighted that such announcements “reflect Iran’s dangerously escalatory nuclear behavior,” saying that he is glad about the US commitment to ensure that Iran will never acquire a nuclear weapon – which was strengthened by the Jerusalem Declaration. 

Iran’s atomic chief Mohammad Eslami said Monday Iran would not switch on nuclear-monitoring cameras turned off in June until the 2015 nuclear deal, officially known as the JCPOA (Joint Comprehensive Plan of Action) is restored.