Hard-liners carried banners today accusing moderate President Hassan Rouhani and the nation's nuclear negotiation team of "giving up Iran's right in return for little."
Rouhani has faced criticism from hard-liners over the deal struck in November, which they refer to as a "poison chalice." The temporary deal saw some sanctions lifted against Iran in exchange for it limiting uranium enrichment and allowing in international inspectors.
World powers and Iran are negotiating the terms of a final deal.