Michael Wallace reports a very pronounced curvilinear relationship between a new measure of the polarization of the state system and warfare during 1815-1964. He suggests considerable caution when interpreting the results and urges replication. This is a replication. Given the original cautions, the additional ones made here, and the results of a reanalysis, the conclusion is clear. There is no relationship—linear, monotonic, or nonmonotonic—between polarization and the number, severity, or magnitude of international wars during the period 1815-1976.
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