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...

The paper addresses the Kydland and Prescott (1977) argument that the optimal policy in models with rational expectations is time-inconsistent. This, it is argued, undermines the credibility of the optimal policy in the eyes of the private sector, who will expect the policy-maker to reoptimize....

This paper proposes and applies to the London Business School (LBS) model a general methodology for the design of macroeconomic policy using large rational expectations models. Design proceeds through the following four stages: first, a small, linear representation of the original large,...

This paper re-examines the issue of the credibility and sustainability of optimal policies derived from Pontryagin's Maximum Principle and generally regarded as time-inconsistent, in models with forward-looking rational expectations. Specifically, it considers the behaviour of such models in the...

The effect of asymmetric information on monetary policy is investigated in the context of an overlapping wage contract model. Optimal rules with and without precommitment under full information are compared with the optimal rule without precommitment (i.e. the discretionary rule) under...

The paper investigates the sustainability of cooperative rules for the conduct of macroeconomic policy in a two-country world. The problem is set out as a supergame in which the threat strategy is to switch to a Nash non-cooperative equilibrium. A number of possible non-cooperative equilibria...