According to a Farsi report by the Khabar Online news website, the proponents of the plan underlined the necessity of implementing the Article 27 of Iran's Constitution which says public gatherings and demonstrations are allowed as long as the participants do not carry arms and do not violate the fundamental principles of Islam.
He also dismissed speculation by some Western and Israeli media outlets about the upcoming meeting, stressing that it has nothing to do with Iran's internal affairs or the recent unrest.
"The global community must be prepared for the United States possibly pulling out of the JCPOA", said deputy foreign minister Abbas Araghchi, using the technical name for the nuclear deal.
"Our region will not become a safer region without the JCPOA". In October, the USA president refused to recertify Iran's compliance with the agreement signed by his predecessor Barack Obama.More news: Democratic activist pledges $30 million to mobilize voters
Germany, as well as France, has "warned against attempts at instrumentalising the domestic conflicts in Iran", said Gabriel.
US President Donald Trump openly despises the deal - a central foreign policy achievement of his predecessor Barack Obama - but has so far continued to waive the nuclear-related sanctions at regular intervals as required to stay in compliance.
The IAEA has repeatedly confirmed Iran's full compliance with the global agreement, saying Tehran has not been enriching uranium above the prescribed levels.
The idea of Iran's possible exit from the landmark accord was first voiced by foreign minister Mohammad Javad Zarif, who said in September that "if Washington decides to pull out Iran has the option of withdrawal and other options".