Sanctions travel through the places money waits

Current-rule snapshot: 24 October 2026.

The first break in a sanctioned trade corridor can be a payment no bank wants to send. A buyer, seller and ship may be in place; if a bank or insurer will not accept the exposure, the trade stalls.

Sanctions are a system of gates, not a single red stamp. Governments can freeze a named party’s assets, prohibit a transaction, restrict a sector or, under specific authorities, limit a foreign bank’s correspondent access. Shipping insurance can become unavailable to a vessel or cargo. A payment may be rejected, reserves immobilized or a bank relationship closed.

These consequences can overlap, but they are not interchangeable. A designation is a legal status with specified effects, not a criminal conviction or proof of every public allegation. An asset freeze is not a messaging-network disconnection. A humanitarian exemption is not a guarantee a bank will process a payment.

One word, several different rules

The United States administers multiple sanctions programs. OFAC says they may be comprehensive or selective: some broadly prohibit transactions with a jurisdiction, while others freeze the property of named people or entities, restrict a sector, or prohibit a particular type of trade. The precise rule depends on the program, the parties, the transaction and any U.S. legal connection. The current OFAC program list was updated with actions as recent as 21 October 2026; the Iran program page lists its current advisories, regulations, licenses and recent actions.

OFAC distinguishes between “blocking” and “rejecting.” Blocking means freezing property within U.S. jurisdiction or held by a U.S. person; title remains with the owner, but transfers or use are prohibited unless authorized. If a transaction is prohibited but no blockable property is involved, a financial institution may have to reject it rather than freeze funds. The distinction matters to customers, creditors and counterparties: an asset freeze does not automatically confiscate a person’s property, and a failed payment does not always mean funds have been seized. OFAC’s explanation of blocked property and its block-or-reject guidance spell out the difference.

Lists differ by jurisdiction. EU Iran measures include asset freezes, bans on making funds available to listed persons and sector, transport and insurance restrictions. The UN Secretariat says earlier Security Council sanctions were reapplied on 27 September 2025; Iran and some states dispute the process. The EU also reinstated nuclear-related restrictions. Its July 2026 Russia package added transaction bans on financial institutions and restrictions on energy and maritime services. A company operating across borders may face distinct U.S., EU, Kenyan and other rules. The UN’s Iran update, the EU’s Iran page and its Russia package show the variation. Iran’s formal objection is also part of the record.

A designation is also distinct from attribution. A government can list a person or firm under a legal authority because it meets that program’s stated criteria. That creates specified legal consequences for covered actors. It does not itself prove that a particular attack was directed by that person, or that the person has been convicted in court. To establish attribution or criminal responsibility requires evidence beyond the existence of a listing.

The correspondent bank is the narrow part of the pipe

Most countries do not have a direct account with every bank in every trading partner. A local bank may hold an account with a larger bank abroad—a correspondent account—to make and receive payments in foreign currencies, clear cheques, convert currencies or serve its customers internationally. The Basel Committee describes correspondent banking as a way for respondent banks to access cross-border services they could not provide on their own.

The dollar can add a U.S. bank to the chain, because dollar settlement often uses U.S. accounts. But the dollar, SWIFT and settlement are separate. SWIFT transmits bank messages; it does not hold customer money or settle payments. Disconnecting a bank can make instructions harder to exchange, but does not alone freeze its assets. The EU separately immobilized Russian central-bank reserves held in EU institutions—a restriction on reserve assets rather than payment messaging. SWIFT’s explanation and the EU’s account of Russian reserves show the distinction.

Some U.S. sanctions laws also reach foreign financial institutions. Under certain programs, the Treasury must make a finding that a foreign bank knowingly engaged in a specified sanctionable activity before it can prohibit or impose strict conditions on that bank’s U.S. correspondent or payable-through accounts. The trigger is not “any bank that does any business with a sanctioned country.” It is program-specific and may depend on the activity, knowledge and governing authority. OFAC FAQ 155 describes this threshold for one such regime; the Iran program’s 5 October 2026 notice warns foreign banks of the risks under that program.

Even where no law requires a bank to stop every payment, compliance costs may change its decision. A correspondent must identify parties, understand purpose, screen names and keep records. If facts are unclear, perceived legal and reputational exposure may outweigh the fee. A bank may decline business or leave the relationship. Basel calls for risk-based review, not blanket avoidance; an IMF analysis also identifies compliance costs and profitability as drivers of correspondent exits. BIS guidance and the IMF analysis describe those pressures.

Insurance is another gate. OFAC warns that underwriting, insurance and reinsurance for specified Iranian energy or maritime activity can create sanctions exposure; EU rules also restrict some insurance services to Iranian entities. Without legitimate cover, a cargo may face problems with finance, chartering or port access. OFAC’s maritime advisory and the EU regulation explain the scope and exceptions.

That is the financial artery: one relationship can serve hundreds of downstream businesses. Its closure does not make trade physically impossible, but it can add time, cost and uncertainty to paying suppliers, receiving export revenue, buying insurance, drawing trade credit or servicing debt. Governments may intend to constrain a state, a sector or an individual. The effects can travel further through the intermediaries that choose to avoid risk.

Humanitarian permission has to pass through real institutions

Sanctions rules increasingly contain humanitarian exceptions, carve-outs or licenses. The UN Security Council’s Resolution 2664 created a standing exemption from UN asset freezes for funds, goods and services necessary for humanitarian assistance and basic human needs, when handled by specified providers. The EU has incorporated that exemption into UN and mixed UN/EU regimes and permits humanitarian derogations in some of its own programs. These are material legal protections, but their scope is not universal: they do not automatically cancel every trade restriction, national licensing rule or other sanctions program. The UN’s resolution summary and the EU’s explanation describe the limits.

For Iran, U.S. law contains broad authorizations and exceptions for sales of food, agricultural commodities, medicine and medical devices. OFAC says these transactions are generally not sanctionable unless they involve certain designated persons, financial institutions or other prohibited activity. A Qatar humanitarian channel is voluntary and requires due diligence; it does not lift sanctions, and funds are restricted to permitted purchases. OFAC’s live Iran page lists certain general licenses suspended in 2026, showing that permissions can change. OFAC’s humanitarian-trade FAQ, its Qatar-channel explanation and current Iran page explain the boundaries.

The remaining gap is practical access. An exemption does not create an account, secure a correspondent, arrange insurance or move goods. A UN report records banks and money-transfer providers ending services for aid groups over sanctions fears. In Somalia, payments held for weeks were released within days after an exemption was paired with dialogue among authorities, banks and aid organizations. In Afghanistan, exemptions enabled limited funds to reach groups, but a UN cash facility was still needed. The UN report shows why legal permission is necessary but not sufficient.

Kenya sits where settlement meets the fuel invoice

Kenya is not named here as a sanctioned state. It is a useful example of how global finance reaches an importer. The Central Bank of Kenya says larger foreign-exchange transfers by commercial banks are settled through correspondent accounts abroad. It also states that official foreign-exchange reserves are held to meet external obligations, including imports and external debt service. The reserve stock and the payment rail are different things: reserves are assets held by a central bank, while a correspondent account is one route a commercial bank may use to settle transactions. CBK’s financial-markets explanation sets out both roles.

Petroleum makes the link visible. Kenya imports refined petroleum products, and EPRA says international fuel prices are denominated in U.S. dollars before conversion into shillings for pump-price calculations. A restriction that affects a seller, bank, insurer or shipping service can therefore alter the cost or timing of a purchase even if the fuel itself remains available. The EPRA petroleum price notices explain the dollar-to-shilling calculation; its 2025 petroleum statistics report documents import volumes and infrastructure.

There is a countercase. Regional payment systems can reduce dependence on foreign-currency correspondent relationships for transactions between participating African institutions. CBK’s East African Payment System settles transfers among Kenya, Rwanda, Tanzania and Uganda in local currencies. In February 2026, PAPSS and Kenya’s Pesalink announced a connection enabling cross-border payments from PAPSS participants into participating Kenyan banks and mobile-money operators, settled in local currencies. Those systems can make regional payments faster and simpler. They do not replace foreign currency for every commodity invoice, provide insurance for a cargo, or override a sanctions rule that applies to a listed party or transaction. Changing the rail does not change the law. CBK’s payment-system description and PAPSS’s Kenya announcement describe their scope.

This is the countercase to both extremes. Sanctions do not simply “turn off the dollar” for a whole population, and humanitarian exceptions do not guarantee access. A transaction’s route, parties, currency, cargo, insurer and legal jurisdiction determine which rules apply. A bank’s decision to over-comply can extend effects past a law’s boundary; an alternative payment system can solve some regional frictions without replacing every global service. The right question is not whether sanctions exist, but where the legal gate is, who controls it, and who bears the delay when nobody wants to take responsibility for opening it.

Sources

• OFAC sanctions programs, Iran notices and authorizations
• OFAC, shipping and maritime sanctions advisory
• UN Security Council update on Iran snapback and Iran’s formal objection
• EU sanctions against Iran
• EU Iran restrictive-measures regulation (consolidated 29 September 2025)
• EU Russia sanctions, 21st package
• OFAC, blocked property and block/reject/process distinctions
• OFAC, correspondent-account sanctions threshold
• BIS correspondent-banking guidance and IMF withdrawal analysis
• SWIFT, role in cross-border payments
• EU, immobilised Russian Central Bank assets
• UN, Resolution 2664
• UN Emergency Relief Coordinator, humanitarian over-compliance report
• EPRA, petroleum imports and pricing
• CBK, FX accounts and reserve management
• CBK, regional payment systems
• PAPSS, Pesalink partnership in Kenya

The Treasury Department building in Washington, photographed 27 March 2007. Institutional file image; it does not depict a particular sanctions designation or customs action. Credit: Loren. Image source · Public domain, dedicated by the photographer