Previous studies of Western European foreign policy attitudes rely almost exclusively on single-item measures, such as support for defence spending, support for the new missiles in Europe, opinions on NATO, and so on. This article, using a multi-country data set, aggregates several survey items and explores the manner in which Europeans structure their attitudes towards one aspect of foreign policy: Atlantic co-operation. A factor analysis uncovers two underlying conceptual dimensions: military and non-military co-operation. These dimensions provide the axes to construct a four-fold typology of viewpoints, consisting of Atlanticists, Military Allies, Dovish Partners and Isolationists. Respondents are classified within this typology, and the European-wide and cross-national distributions of opinion are presented. The highest support for Atlantic co-operation is found among the West Germans, and the lowest is found among the French.