Policy-makers and political scientists have long believed that states must make policy with an eye to maintaining a good reputation, especially a good reputation for resolve. Recent work, however, has argued that reputations for resolve do not form, and hence that past actions do not influence observers' behavior in subsequent interactions. This conclusion is theoretically problematic and unsupported by the evidence offered by reputation critics. In particular, juxtaposing reputation for resolve to power and interests is misleading when past actions influence observers' beliefs about interests, while the common approach of looking at crisis decision making misses the impact of reputation on general deterrence. We thus derive hypotheses about conflict onset from both the arguments of reputation critics and the logic of more standard reputation arguments, which we put to statistical test. We find that past action is closely connected to subsequent dispute initiation and that the effects of reputation generalize beyond the immediate circumstances of the past dispute. Although reputation is not all-important, leaders are well advised to consider the reputational implications of policy decisions in international conflict.Leaders often claim that a reputation for resolve is worth fighting for. President Harry Truman justified intervention in Korea on the grounds that a failure to respond "would be an open invitation to new acts of aggression elsewhere." 1 Justifying a firm policy by invoking concerns for the country's reputation may serve as an effective rhetorical tool to garner the public's support. But are leaders right to be concerned about their country's reputation for resolve? Does having a good or a bad reputation for resolve matter in international politics?Both policy-makers and international relations scholars traditionally have answered both these questions in the affirmative. However, drawing on a surprising dearth of evidence of reputation in the historical record, a growing literature argues both theoretically and empirically that states do not in fact develop reputations for resolution or irresolution. This conclusion suggests that leaders' efforts to build and protect those reputations have been wasted.