This paper presents an investigation of the empirical significance of the Lucas Critique for the Phillips Curve. The investigation is carried out with annual historical time series for the United Kingdom (1857-1987) and the United States (1892-1987). The results, for two different models of the...

Sales of arms are a significant component of international trade and raise a range of pressing policy issues. After a short review of the market, this paper provides a formal model of the trade which allows for competing, forward-looking suppliers whose welfare depends on both the economic...