UNITED STATES -NATIONAL SECURITY ,POLICY: ESTI-
  MATES *-OF THREATS TO THE NATIONAL SECURITY;
  THE EXTENSION OF :MILITARY ASSISTANCE TO FOR-
  EIGN    NATIONS; THE         PREPARATION! OF-* NSC         68,
  "UNITED STATES OBJECTIVES AND PROGRAMS FOR
  NATIONAL SECURITY"'1

                         Editorial Note
  A substantial portion of the documentation printed in the Foreign
Relations series for 1950 concerns subjects of relevance to the national
security. Documentation in the present compilation pertains to the
formulation of high level, general policy. This material should be
considered in connection with papers on specific issues and areas found
elsewhere in the Foreign Relations volumes for 1950. The compilations
noted below cre of special interest with respect to the more general
material printed here.
  For documentation on United States policy at the United Nations
with respect to the regulation of armaments and collective security, see
pages 1 if. Regarding foreign policy aspects of United States develop-
ment of atomic energy, see pages 493 ff. For documentation on defense
of the Western Hemisphere, see pages 599 ff. For documentation on
the Korean conflict, see volume VII. For documentation on the North
Atlantic Treaty Organization and United States economic and mili-
tary aid to Europe, see volume III, pp. 1 ff. Additional documentation
on the Soviet Union and national security is scheduled for publication
in volume IV. Compilations on East-West trade, the United States
response to the Soviet "Peace Offensive," and general problems
in rela-
tions between the United States and Eastern Europe are also sched-
uled for publication ibid. For documentation on general United States
policy respecting the East Asian-Pacific area, see volume VI, pages 1 ff.
  To locate documentation on United States policy regarding military
assistance to individual nations or areas, see the indexes of volumes I,
II, III, V, VI, and VII. Material on United States policy with respect
to bases and military air transit rights in specific areas of the world
may be found by consulting the indexes of volumes I, III, V, and VI.

  'For previous documentation, see Foreign Relations, 1949, vol. i, pp. 249
ff.
      126