Recent years have seen the so-called New Left school of historiography cut a wide swath through the study of American diplomacy. Reacting at least in part to the exigencies of the Vietnam War, as well as to older schools of diplomatic history, its adherents have molded a point of view that has emphasized economic factors as the driving force in American foreign policy. In this essay. Dr. Braeman focuses on the 1920s, a crucial decade in New Left thinking. After probing the intellectual origins of this school of thought, he brings historical statistics to bear in his analysis of American investment abroad, the conduct of American policymakers, and the contending interpretations of American foreign policy.

The foundries and forges of Decazeville were among the most important in France during the July Monarchy. Extensive company correspondence reveals that the nature of relations between the board of directors and the local managers, and between the firm and its clients, were important factors in shaping the tenor of labor relations at Decazeville. The interference of the board and clients limited the manager's authority over his subordinates. Once freed from this, the manager reformed the administration of labor at Decazeville. He tested the allegiance of his foremen to the company and emphasized to them the importance, when paying by piece-rate, of going beyond inspection of the completed products to supervision of the work as it was being done.

The search for an economically sound procedure for estimating an appropriate rate of return on equity consistent with the Supreme Court's ruling in the Hope case [13] has led many economists, financial experts, and public service commissions to estimate the rate of return on equity with the capital asset pricing model (CAPM) (see [30], [19], and [21]). The popularity of the CAPM in regulatory proceedings was reported by Harrington [15] who, in a survey of public service commissions, found that 38 states were considering or had seen the CAPM used, two jurisdictions preferred the CAPM, Oregon required the CAPM, and South Carolina would require the CAPM in all future cases. Hence, given the popularity of the CAPM and the tremendous economic impact that outcomes of regulatory proceedings have on the financial well-being of both the regulated firm and the consumer, it is critical that if the CAPM is used in regulatory proceedings that it be applied in the best manner possible and that any limitations associated with the CAPM be recognized fully.

A number of recent papers have shown that it is possible for an investor to immunize a portfolio of default and option-free coupon bonds so that the return realized over a given planning period will never be less than that promised at the time the bonds were purchased. In this way, a future fixed dollar liability may be discharged with certainty by acquiring an asset portfolio with a market value equal to the present value of the liability and setting its appropriate duration equal to the time remaining to the date of discharge. However, most investors have more than one liability to discharge. In his seminal article in 1952, F. M. Redington showed that a stream of liabilities may be immunized if an asset portfolio having the same present value as the liabilities is selected so that:

1. its duration is equal to the duration of the liabilities; and

2. “the spread of the value of asset-proceeds about the mean term (duration) should be greater than the spread of the value of the liability” ([16], p. 191).