Iran Press/Iran news: Behrouz Kamalvandi, noted to the expansion of centrifuges as another Iran's option if 2015 nuclear deal signatories don’t observe their commitments during Iran's ultimatum.
On Sunday the spokesman for the Atomic Energy Organization of Iran Behrouz Kamalvandi said that 60-day window of opportunity has drawn to close and Iran was taken the second reciprocal step, with uranium enrichment at higher than 3.67 percent level will commence in the next few hours.
Iran announced the second reciprocal step in JCPOA on Sunday.
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