Competitive endurance (attrition by ledger)

Competitive endurance, or attrition by ledger, treats a prolonged economic contest as a comparison of each side's capacity to absorb cost, replace denied inputs and maintain political commitment. The ledger is analytical. It combines fiscal, industrial, financial, technological and coalition indicators; no official sanctions announcement determines whose ledger will fail first.

The Russia campaign

The European Union's sanctions timeline and the Bureau of Industry and Security's Russia and Belarus guidance establish a campaign of repeated legal adjustment since 2022. The European Union adopted its twenty-first package on 23 July 2026. These records show duration, instrument type and revision tempo. They do not establish the campaign's net effectiveness.

A defensible endurance assessment tracks both sender and target costs. Target-side indicators include access to controlled inputs, replacement quality, trade discounts, financing costs, fiscal transfers and the time required to restore production. Sender-side indicators include subsidy cost, foregone trade, enforcement resources, coalition divergence and political tolerance. Reserve levels or headline growth alone cannot decide the comparison.

The United States Government Accountability Office reported in 2025 that agencies had assessed selected Russia measures but lacked complete measurable objectives and targets for evaluating effectiveness. Recommendation status remained open through March 2026. That official finding limits strong claims of demonstrated success or failure. It does not show that the measures had no effect.

Technology competition

Attrition also appears in technology controls. Export restrictions may deny an input immediately, but their strategic effect emerges through procurement cycles, inventories, maintenance, redesign and domestic substitution. The relevant time horizon is therefore the target system's replacement cycle, not the announcement date.

The same logic applies to the sender. Tightening a rule can increase denial while encouraging alternative supply, indigenous production or coalition leakage. Endurance analysis must record those adaptations rather than treating evasion as either total defeat or proof of resilience.

Decision rhythm

An endurance ledger must support decisions rather than accumulate indicators. A review cycle should compare actual performance with the campaign's stated objectives, identify which assumptions have failed and assign authority for adjustment. Lagging indicators, such as annual output, should be paired with leading indicators, such as licence applications, component lead times, procurement rerouting and budget commitments.

Time horizons also need separation. A restriction may impose an immediate transaction cost, a medium-term production delay and a longer-term incentive to build substitute capacity. Collapsing these periods can make the same evidence appear to prove both success and failure.

Coordination proposal

Tennant proposes that partners mirror qualifying sanctions within 48 hours to narrow early routing opportunities. This is a prescriptive design principle, not an adopted coalition rule or a description of current practice. Its feasibility depends on each partner's legal authority, evidence threshold, due process and implementation capacity.

Assessment

The concept is strongest when the ledger is explicit. Each indicator needs an owner, unit, baseline, review interval and threshold. Political tolerance should be inferred from observable decisions rather than assumed. Official sources establish adopted measures and institutional assessments; transparent economic data and independent analysis are still required to judge endurance.

See also

Sanctions effectiveness debate | Strategic materials substitution, synthesis and recycling | Coalition coverage (the coverage problem) | Export control as strategic instrument

Sources

• Council of the European Union, Russia sanctions package timeline, accessed 29 July 2026.
• Bureau of Industry and Security, Russia and Belarus guidance, accessed 29 July 2026.
• United States Government Accountability Office, *Russia Sanctions and Export Controls: U.S. Agencies Should Establish Targets to Better Assess Effectiveness*, 2025.
• Council of the European Union, twenty-first package of sanctions against Russia, 23 July 2026.