Four generic motives have historically led states to initiate war: fear, interest, standing, and revenge. Using an original data set, Richard Ned Lebow examines the distribution of wars across three and a half centuries and argues that, contrary to conventional wisdom, only a minority of these were motivated by security or material interest. Instead, the majority are the result of a quest for standing, and for revenge - an attempt to get even with states who had previously made successful territorial grabs.