Credibility and resolve

Credibility is an audience's conditional belief that an actor will carry out a commitment or threat; resolve is the actor's willingness to bear costs in pursuit of an objective. Neither quality is directly observable or permanently established by one sanctions episode.

Distinctions

Compellence seeks a change in behaviour. Economic deterrence seeks to prevent behaviour. Reassurance promises restraint or support, while Sanctions as signalling communicates priorities or coalition unity. The same restriction can serve several purposes, but analysis should identify the demand, audience and time horizon.

Credibility depends on capability, authority, domestic and coalition constraints, clarity, prior conduct and the target's beliefs. Resolve concerns willingness under specified conditions. A government can possess the capability to impose costs but lack resolve, or display willingness through a measure that the target doubts it can sustain.

Evidence

Observable indicators include enacted legal measures, resources committed, coalition agreements, enforcement activity, accepted domestic cost, repeated warnings and termination conditions. Official acts establish what happened. They do not establish the target's interpretation, the sender's private motive or a durable reputation across unrelated disputes.

Schelling's account of coercion emphasises communication, bargaining and the manipulation of risk. Lisa Martin's work shows that institutions and co-operation can affect how commitments are understood. These theories should be attributed rather than converted into a rule that costly sanctions automatically demonstrate resolve.

Application to statecraft

Sanctions design and calibration can strengthen credibility by linking demands, escalation and relief to observable conditions. Vague objectives, uncontrolled leakage or inconsistent exemptions may weaken the message, but the effect must be tested with evidence from the target and relevant audiences.

The US Treasury's 2021 review described sanctions as most effective when linked to clear objectives, allied co-ordination and calibrated consequences. That is an official policy assessment, not proof that every later programme met those conditions.

As at 30 July 2026, editors should avoid current counts of programmes as a proxy for resolve. They should specify actor, commitment, audience, cost, observed follow-through and alternative explanations. Reputation can be issue-specific, and a judgement in one crisis should not be transferred automatically to another.

Failure modes

Credibility can be undermined by threats that exceed legal authority, demands that cannot be verified, or relief that cannot be delivered. Coalition measures add another principal-agent problem because each participant controls renewal and enforcement. A target may doubt collective endurance even where the initial announcement is strong.

Conversely, restraint does not necessarily show weakness. A sender may preserve escalation options, protect third parties or stop once a narrow objective is met. Analysts should distinguish inability, unwillingness and calibrated limitation. Interviews, target statements and bargaining records can inform audience belief, but retrospective claims remain subject to strategic self-presentation.

Credibility can also differ between a threat to impose measures and a promise to remove them. If relief is legally or politically difficult, the target may doubt the value of compliance even when the threat itself is credible.

Sources

1. Thomas C. Schelling, *Arms and Influence*.
2. Lisa L. Martin, credibility and economic sanctions.
3. US Department of the Treasury, *The Treasury 2021 Sanctions Review*.
4. US Treasury, current sanctions programmes (accessed 30 July 2026).