Established during World War II to advise the President regarding the strategic direction of the armed forces of the United States, the Joint Chiefs of Staff (JCS) continued in existence after the war and, as military advisers and planners, have played a significant role in the development of national policy. Knowledge of JCS relations with the President, the National Security Council, and the Secretary of Defense in the years since World War II is essential to an understanding of their current work. An account of their activity in peacetime and during times of crisis provides, moreover, an important series of chapters in the military history of the United States. For these reasons, the Joint Chiefs of Staff directed that an official history be written for the record. Its value for instructional purposes, for the orientation of officers newly assigned to the JCS organization, and as a source of information for staff studies will be readily recognized. The series, The Joint Chiefs of Staff and National Policy, treats the activities of the Joint Chiefs of Staff since the close of World War II. Because of the nature of the activities of the Joint Chiefs of Staff as well as the sensitivity of the sources, the volumes of the series were originally prepared in classified form. Classification designations, in text and footnotes, are those that appeared in the original classified volume. Following review and declassification, the initial four volumes, covering the years 1945-1952 and the Korean War, were distributed in unclassified form within the Department of Defense and copies were deposited with the National Archives and Records Administration. These volumes are now being made available as official publications. Volume IV describes JCS activities during 1951-1952 except for activities related to Korea which are covered in Volume III and activities related to Indochina which are covered in a separate series. The outline for this volume was developed by Dr. Walter S. Poole under the guidance of Mr. Kenneth W. Condit. Dr. Poole performed the research and drafted the manuscript under the successive direction of Mr. Condit, Dr. Robert J. Watson, and Mr. James F. Schnabel. Some of Dr. Poole's draft chapters were also reviewed by Mr. Vernon E. Davis, former Chief of the Histories Branch. Ultimately, Dr. Poole assumed full responsibility for the volume.