[custom_adv] Diplomats are the oldest form of any of the foreign policy institutions of the state, predating by centuries foreign ministers and ministerial offices. They usually have diplomatic immunity. [custom_adv] Seasoned diplomats of international repute are used in international organizations (for example, the United Nations, the world's largest international diplomatic organization) as well as multinational companies for their experience in management and negotiating skills. [custom_adv] It usually refers to international diplomacy, the conduct of international relations through the intercession of professional diplomats with regard to a full range of topical issues. [custom_adv] Ramin Mehmanparast is a diplomat, the former spokesman of the Iranian foreign ministry and the current ambassador to Poland and Lithuania. He was the deputy Minister of Foreign Affairs, the head of the "Center for Public Diplomacy & Media" and the spokesperson of the Ministry of Foreign Affairs from 31 October 2009 until his resignation on 11 May 2013. [custom_adv] Mehmanparast was nominated for 2013 presidential election on 11 May 2013 and left his position as the spokesman of the Foreign Ministry on the same day. He withdrew from his nomination on 19 May 2013. [custom_adv] He was the deputy Minister of Foreign Affairs, the head of the "Center for Public Diplomacy & Media" and the spokesperson of the Ministry of Foreign Affairs from 31 October 2009 until his resignation on 11 May 2013.