“The clear provisions of the Iranian nuclear deal are completely misinterpreted by opponents.
The U.S. maximum pressure policy remains the leading factor in advancing the Iranian nuclear program,” he wrote on his Twitter.
The permanent representative suggested that the restoration of exemptions could slow down Tehran's nuclear program.
A State Department spokesman earlier in a commentary to RIA Novosti announced the decision to restore exemptions from sanctions on Iran's nuclear program.
The diplomat stressed that Washington does not consider this step as a concession.
Iranian Vice President, head of the Atomic Energy Organization (AEOI) Mohammad Eslami said in December that the country does not intend to exceed the level of uranium enrichment of 60%, even if the negotiators in Vienna do not come to an agreement, and the United States does not cancel its restrictions.