Diplomacy is the art and practice of conducting negotiations between representatives of states. 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. International treaties are usually negotiated by diplomats prior to endorsement by national politicians. David Stevenson reports that by 1900 the term "diplomats" also covered diplomatic services, consular services and foreign ministry officials.
Some of the earliest known diplomatic records are the Amarna letters written between the pharaohs of the Eighteenth dynasty of Egypt and the Amurru rulers of Canaan during the 14th century BC. Following the Battle of Kadesh in c. 1274 BC during the Nineteenth dynasty, the pharaoh of Egypt and the ruler of the Hittite Empire created one of the first known international peace treaties which survives in stone tablet fragments, now generally called the Egyptian–Hittite peace treaty.
Relations with the government of the Ottoman Empire (known to Italian states as the Sublime Porte) were particularly important to Italian states. The maritime republics of Genoa and Venice depended less and less upon their nautical capabilities, and more and more upon the perpetuation of good relations with the Ottomans. Interactions between various merchants, diplomats and clergy men hailing from the Italian and Ottoman empires helped inaugurate and create new forms of diplomacy and statecraft. Eventually the primary purpose of a diplomat, which was originally a negotiator, evolved into a persona that represented an autonomous state in all aspects of political affairs. It became evident that all other sovereigns felt the need to accommodate themselves diplomatically, due to the emergence of the powerful political environment of the Ottoman Empire. One could come to the conclusion that the atmosphere of diplomacy within the early modern period revolved around a foundation of conformity to Ottoman culture.