TEHRAN Visiting Danish Deputy Foreign Minister Peterson discussed expansion of bilateral political, economic and cultural ties as well as international and regional issues with Foreign Minister Kamal Kharrazi here Monday. Kharrazi said that there are solid grounds for expansion of ties adding, ``Iran and Denmark enjoy cordial relations in various areas, including oil and gas, but there should be more efforts to extend these cooperation to other areas.'' Welcoming parliamentary cooperation between the two countries, Kharrazi said these sorts of relations have positive effect on strengthening bilateral ties.