Sanctions leakage

Sanctions leakage is the continued movement of restricted goods, services, funds or revenue through channels that reduce a measure's intended effect. It is not one observable total. Leakage must be defined at the level of a transaction, item, vessel, entity or payment route before it can be aggregated.

Channels

Leakage can involve controlled goods routed through third countries, oil carried by designated or opaque shipping networks, payments processed by non-coalition institutions, or cryptocurrency services used to move value. These channels have different rules and evidence.

The Bureau of Industry and Security's Common High Priority List identifies item categories that enforcement partners prioritise because of their importance to Russia's war effort and diversion risk. BIS Russia and Belarus guidance supplies licensing requirements and red flags. A listed item or red flag is not proof that a particular shipment was diverted.

The European Union's twenty-first Russia package, adopted on 23 July 2026, added measures involving named shadow-fleet vessels, non-Russian financial institutions and cryptocurrency platforms. These official actions establish that the Council identified specified actors and conduct under its authorities. They do not measure total leakage or prove that the wider regime failed.

Measurement

A leakage estimate needs a numerator, denominator and period. Useful evidence includes customs mirror statistics, shipment records, ownership data, price differentials and enforcement outcomes. Attempted evasion, completed diversion, licensed trade, substitution and false positives must remain separate.

Persistent leakage can coexist with significant cost and delay. The proper assessment asks whether restricted access became slower, narrower, more expensive or less reliable. The existence of a route is not enough to answer that question.

See also

Sanctions evasion as system design | Shadow fleet | Third-country intermediation | Anti-circumvention enforcement | Sanctions safe haven

Sources

• Bureau of Industry and Security, Common High Priority List, accessed 29 July 2026.
• Bureau of Industry and Security, Russia and Belarus guidance, accessed 29 July 2026.
• Council of the European Union, twenty-first Russia sanctions package, 23 July 2026.
• Council of the European Union, Russia sanctions package timeline, accessed 29 July 2026.