According to him, this is necessary in order to make it clear to Tehran that further delay in negotiations in Vienna on the restoration of the Joint Comprehensive Plan of Action on the Iranian Nuclear Program (JCPOA) will have consequences.

"The fact that we are sitting in Vienna does not mean that we cannot take steps to make it clear to Iran that it will pay the price if it continues to sabotage (negotiations. -

RT

)," TASS quoted a State Department spokesman as saying.

Iranian Deputy Foreign Minister Ali Bagheri said earlier that the United States approved Tehran's proposals on the American side providing guarantees for a nuclear deal and the need to create a verification mechanism to lift the sanctions.