Succint narrative biographies of every serving head of state or head of government, covering some 200 countries and territories. Each country section contains a brief explanation of its type of government and the respective roles of the head of state, the head of government and the legislature; a listing of the most recent heads of state and head of government, with dates of office; biographical profiles of the current head of state and head of government, and other recent incumbents of these positions who remain significant and active political leaders; and a photographic section with pictures of many of the world's political leaders. Fully indexed by name, date of taking office, and source of authority.