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This paper reports the creation of a data set of 256 cases of international conflict between 1815 and 1965. These conflicts consisted of (1) international disputes and crises in which the use of force appeared likely, (2) the unreciprocated use of violence, and (3) the reciprocated use of violence. The paper includes some statistics describing patterns in the data and contains an Appendix listing the data set.
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Siverson et al. (1982) studied this question.
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