In international relations, credibility is the perceived likelihood that a leader or a state follows through on threats and promises that have been made.[1] Credibility is a key component of coercion (i.e. compellence and deterrence), as well as the functioning of military alliances.[2] Credibility is related to concepts such as reputation (how past behavior shapes perceptions of an actor's tendencies)[3][4] and resolve (the willingness to stand firm while incurring costs).[5][6] Reputation for resolve may be a key component of credibility, but credibility is also highly context-dependent.[7]
Credibility may be determined through assessments of power,[8] past reputation,[9][10] current interests,[8] and signaling.[11]Situational and dispositional factors may affect perceptions of credibility.[3][5] Misperception and miscommunication can lead to erroneous assessments of credibility.[12] Assessments of reputation may be linked to specific leaders,[13][14] as well as states. Leaders and diplomats generally consider the credibility of their state to be of paramount importance.[8][15]