Henry KissingerHenry Alfred Kissinger (ˈkɪsᵻndʒər ; born Heinz Alfred Kissinger, haɪnts ˈʔalfʁeːt ˈkɪsɪŋɐ, on May 27, 1923) is an American diplomat, political theorist, geopolitical consultant, and politician who served as United States secretary of state and national security advisor under the presidential administrations of Richard Nixon and Gerald Ford. For his actions negotiating a ceasefire in Vietnam, Kissinger received the 1973 Nobel Peace Prize under controversial circumstances.
International relations theoryInternational relations theory is the study of international relations (IR) from a theoretical perspective. It seeks to explain behaviors and outcomes in international politics. The four most prominent schools of thought are realism, liberalism, constructivism, and rational choice. Whereas realism and liberalism make broad and specific predictions about international relations, constructivism and rational choice are methodological approaches that focus on certain types of social explanation for phenomena.
