In the post-World War II era Americans have had a pressing need to come to terms with two critical international uncertainties: the future character of Soviet behavior and the likely shape of the nuclear danger. One recurrent idea that seeks to deal with these uncertainties is the notion that the United States is about to enter a period of peril because of an adverse shift in the strategic nuclear balance. The idea was most in vogue during the 1950s, but it has recently been revived as the "window of vulnerability."
The uneasy public quiet on Vietnam which the President achieved with his speech last November 3 was shattered by the large-scale U.S. military intervention in eastern Cambodia. Once more U.S. policy in Southeast Asia became the subject of major controversy. In this situation there is some danger that we shall become so caught up in the immediate issues that we neglect more fundamental questions with respect to current American strategy. The new actions are a product of a basic fault in the structure of U.S. policy but do not, by themselves, define that fault.
