Nonunitary actors in spatial models - How far is far in foreign policy?

Spatial models are increasingly finding entrance into the analysis of inter national relations. These models are perfectly appropriate as long as the r elevant policy or negotiation space is unidimensional or the actors are tru ly unitary. But the recent discovery of the domestic arena questions the ap propriateness of the unitary actor assumption. Hence, using spatial models becomes questionable. This article discusses the limitations of spatial mod els in this context and shows under what conditions the nonunitariness of a ctors poses no problems.