Given the question: Information: - A diplomat is a person appointed by a state to conduct diplomacy with one or more other states or international organisations. The main functions of diplomats are: representation and protection of the interests and nationals of the sending state; initiation and facilitation of strategic agreements; treaties and conventions; promotion of information; trade and commerce; technology; and friendly relations. Seasoned diplomats of international repute are used in international organisations (e.g. United Nations) as well as multinational companies for their experience in management and negotiating skills. Diplomats are members of foreign services and diplomatic corps of various nations of the world. - Diplomatic rank is the system of professional and social rank used in the world of diplomacy and international relations. A diplomat's rank determines many ceremonial details, such as the order of precedence at official processions, table seatings at state dinners, the person to whom diplomatic credentials should be presented, and the title by which the diplomat should be addressed. - Diplomatic immunity is a form of legal immunity that ensures diplomats are given safe passage and are considered not susceptible to lawsuit or prosecution under the host country's laws, although they can still be expelled. Modern diplomatic immunity was codified as international law in the Vienna Convention on Diplomatic Relations (1961) which has been ratified by all but a handful of nations, though the concept and custom of such immunity have a much longer history dating back thousands of years. Many principles of diplomatic immunity are now considered to be customary law. Diplomatic immunity as an institution developed to allow for the maintenance of government relations, including during periods of difficulties and armed conflict. When receiving diplomats, who formally represent the sovereign, the receiving head of state grants certain privileges and immunities to ensure they may effectively carry out their duties, on the understanding that these are provided on a reciprocal basis. - An ambassador is an official envoy, especially a highest ranking diplomat who represents a state and is usually accredited to another sovereign state, or to an international organization as the resident representative of their own government or sovereign or appointed for a special and often temporary diplomatic assignment. The word is also often used more liberally for persons who are known, without national appointment, to represent certain professions, activities and fields of endeavor. An ambassador is the ranking government representative stationed in a foreign capital. The host country typically allows the ambassador control of specific territory called an embassy, whose territory, staff, and vehicles are generally afforded diplomatic immunity in the host country. Under the Vienna Convention on Diplomatic Relations, an ambassador has the highest diplomatic rank. Countries may choose to maintain diplomatic relations at a lower level by appointing a charge d'affaires in place of an ambassador. - In diplomacy , a legation was a diplomatic representative office lower than an embassy . Where an embassy was headed by an ambassador , a legation was headed by an Envoy Extraordinary and Minister Plenipotentiary . The distinction between a legation and embassy was gradually dropped following World War II. Diplomatic representative offices are now designated as embassies , consulates , permanent missions or high commissions . - A charge d'affaires, often shortened to charge (French) and sometimes to charge-D (abbreviated in colloquial English), is a diplomat who heads an embassy in the absence of the ambassador. The term is French for "charged with (in charge of) matters". A female diplomat may be designated a chargee d'affaires, following French declension. - The Vienna Convention on Diplomatic Relations of 1961 is an international treaty that defines a framework for diplomatic relations between independent countries. It specifies the privileges of a diplomatic mission that enable diplomats to perform their function without fear of coercion or harassment by the host country. This forms the legal basis for diplomatic immunity. Its articles are considered a cornerstone of modern international relations. As of April 2014, it has been ratified by 190 states. - International Organization is a quarterly peer-reviewed academic journal that covers the entire field of international affairs. It was established in 1947 and is published by Cambridge University Press on behalf of the International Organization Foundation. The editor-in-chief is Jon Pevehouse (University of WisconsinMadison). Given the paragraphs above, decide what entity has the relation 'subclass of' with 'diplomatic mission'.
The answer is:
legation