Domestic structure and foreign policy, by H. A. Kissinger.--The state as a conceptual variable, by J. P. Nettl.--National images and international systems, by K. E. Boulding.--Actor objectives and international systems, by W. F. Hanrieder.--Some dimensions in the foreign behavior of nations, by R. J. Rummel.--An analysis of foreign conflict behavior of nations, by D. A. Zinnes and J. Wilkenfeld.--World politics as a primitive political system, by R. D. Masters.--Compatibility and consensus: a proposal for the conceptual linkage of external and internal dimensions of foreign policy, by W. F. Hanrieder.--The concept \"foreign policy,\" by E. J. Meehan.--What is a foreign policy event? By C. F. Hermann.--Conceptual models and the Cuban missile crisis, by G. T. Allison.--Forecasting models and foreign policy, by W. Wilcox.