George F. Kennan in the context of "Policy Planning Staff (United States)"

Foreign Affairs is an American magazine of international relations and U.S. foreign policy published by the Council on Foreign Relations, a nonprofit, nonpartisan, membership organization and think tank specializing in U.S. foreign policy and international affairs. Founded on 15 September 1922, the print magazine is published every two months, while the website publishes articles daily and anthologies every other month.

Foreign Affairs is considered one of the United States' most influential foreign-policy magazines. It has published many seminal articles, including George Kennan's "X Article" (1947) and Samuel P. Huntington's "The Clash of Civilizations" (1993).

Containment was a geopolitical strategic foreign policy pursued by the United States during the Cold War to prevent the spread of communism after the end of World War II. The name was loosely related to the term cordon sanitaire, which was containment of the Soviet Union in the interwar period.

Containment represented a middle-ground position between détente (relaxation of relations) and rollback (actively replacing a regime). The basis of the doctrine was articulated in a 1946 cable by U.S. diplomat George F. Kennan during the post-World War II term of U.S. President Harry S. Truman. As a description of U.S. foreign policy, the word originated in a report Kennan submitted to US Defense Secretary James Forrestal in 1947, which was later used in a Foreign Affairs article.

Hans Joachim Morgenthau (February 17, 1904 – July 19, 1980) was a German-American jurist and political scientist who was one of the major 20th-century figures in the study of international relations. Morgenthau's works belong to the tradition of realism in international relations theory; he is usually considered among the most influential realists of the post-World War II period. Morgenthau made landmark contributions to international relations theory and the study of international law. His Politics Among Nations, first published in 1948, went through five editions during his lifetime and was widely adopted as a textbook in U.S. universities. While Morgenthau emphasized the centrality of power and "the national interest," the subtitle of Politics Among Nations—"the struggle for power and peace"—indicates his concern not only with the struggle for power but also with the ways in which it is limited by ethical and legal norms.

In addition to his books, Morgenthau wrote widely about international politics and U.S. foreign policy for general-circulation publications such as The New Leader, Commentary, Worldview, The New York Review of Books and The New Republic. He knew and corresponded with many of the leading intellectuals and writers of his era, such as Reinhold Niebuhr, George F. Kennan, Carl Schmitt and Hannah Arendt. At one point in the early Cold War, Morgenthau was a consultant to the U.S. Department of State when Kennan headed its Policy Planning Staff, as well as a second time during the Kennedy and Johnson administrations until he was dismissed by Johnson when he began to publicly criticize American policy in Vietnam. For most of his career, however, Morgenthau was esteemed as an academic interpreter of U.S. foreign policy.

"The Sources of Soviet Conduct", commonly "X Article", is an article written by George F. Kennan and published under the pseudonym "X" in the July 1947 issue of Foreign Affairs magazine. It introduced the term "containment" to widespread use and advocated the strategic use of that concept against the Soviet Union. It expanded on ideas expressed by Kennan in a confidential February 1946 telegram, formally identified by Kennan's State Department number, "511", but informally dubbed the "long telegram" for its size.

Kennan composed the long telegram in response to inquiries about the implications of a February 1946 speech by Joseph Stalin. Though the speech was in line with previous statements by Stalin, it provoked fear in the American press and public; Time magazine called it "the most warlike pronouncement uttered by any top-rank statesman since V-J Day". The long telegram explained Soviet motivations by recounting the history of Russian rulers as well as the ideology of Marxism–Leninism. It argued that the Soviet leaders used the ideology to characterize the external world as hostile, allowing them to justify their continued hold on power despite a lack of popular support. Washington bureaucrats quickly read the confidential message and accepted it as the best explanation of Soviet behavior. The reception elevated Kennan's reputation within the State Department as one of the government's foremost Soviet experts.

Realpolitik (/reɪˈɑːlpɒlɪˌtiːk/ ray-AHL-po-lih-teek German: [ʁeˈaːlpoliˌtiːk] ; from German real 'realistic, practical, actual' and Politik 'politics') is the approach of conducting diplomatic or political policies based primarily on considerations of given circumstances and factors, rather than strictly following ideological, moral, or ethical premises. In this respect, it shares aspects of its philosophical approach with those of realism and pragmatism.

While generally used as a positive or neutral term, Realpolitik has been used pejoratively to imply policies that are perceived as being coercive, amoral, or Machiavellian. Prominent proponents of Realpolitik include Otto von Bismarck, Henry Kissinger, George H. W. Bush, George F. Kennan, Zbigniew Brzezinski, Hans-Dietrich Genscher, Deng Xiaoping, Charles de Gaulle, and Lee Kuan Yew. The opposite of Realpolitik is Idealpolitik.

A cordon sanitaire (French pronunciation: [kɔʁdɔ̃ sanitɛʁ], French for "sanitary cordon") is the restriction of movement of people into or out of a defined geographic area, such as a community, region, or country. The term originally denoted a barrier used to stop the spread of infectious diseases. The term is also often used metaphorically, in English, to refer to attempts to prevent the spread of an ideology deemed unwanted or dangerous, such as the containment policy adopted by George F. Kennan against the Soviet Union (see cordon sanitaire in politics).

Charles "Chip" Eustis Bohlen (August 30, 1904 – January 1, 1974) was an American diplomat, ambassador, and expert on the Soviet Union. He helped shape United States foreign policy during World War II and the Cold War and helped develop the Marshall Plan to rebuild Europe.

In 1934, he served as a diplomat in the first US embassy to the Soviet Union in Moscow as well as during and after World War II. He succeeded George F. Kennan as ambassador to the Soviet Union from 1953 to 1957. He served as ambassador to the Philippines from 1957 to 1959 and to France from 1962 to 1968. He was an advisor to every U.S. president from 1943 to 1968 and one of the nonpartisan foreign policy advisers who were known colloquially as "The Wise Men."

William Averell Harriman (November 15, 1891 – July 26, 1986) was an American politician, businessman, and diplomat. He was a founder of Harriman & Co. which merged with the older Brown Brothers to form the Brown Brothers Harriman & Co. investment bank, served as Secretary of Commerce under President Harry S. Truman, and was the 48th governor of New York. He unsuccessfully sought the Democratic Party nomination for president in 1952 and 1956. Throughout his career, he was a key foreign policy advisor to Democratic presidents.

Harriman was born to a wealthy family as the son of railroad baron E. H. Harriman. While attending Groton School and Yale University, he made contacts that led to creation of a banking firm that eventually merged into Brown Brothers Harriman & Co. He owned parts of various other companies, including Union Pacific Railroad, Merchant Shipping Corporation, and Polaroid Corporation. During the presidency of Franklin D. Roosevelt, Harriman served in the National Recovery Administration and on the Business Advisory Council before moving into foreign policy roles. After helping to coordinate the Lend-Lease program, Harriman served as Roosevelt's personal envoy to the United Kingdom, then as the ambassador to the Soviet Union, and attended the major World War II conferences. After the war, he became a prominent advocate of George F. Kennan's policy of containment. He also served as Secretary of Commerce, and coordinated the implementation of the Marshall Plan.