29MAY

Treasury Drops Cuba From Russian-Crude Waiver

4 min read

08:47UTC

OFAC issued General License 134C on Monday 18 May after a 48-hour enforcement gap, extending the Russian-crude waiver another 30 days while explicitly excluding Cuba from coverage from 17 June.

← Back to US sanctions the strait its deal reopens Jump to analysis ↓

ConflictDeveloping

Key takeaway

The third 30-day bridge confirms the waiver is permanent in fact; Cuba's exclusion makes it a foreign-policy lever.

The Office of Foreign Assets Control (OFAC), the US Treasury sanctions arm that controls Russia-related authorisations, issued General License 134C on Monday 18 May 2026, two days after General License 134B expired at the close of Saturday 16 May . The new licence authorises delivery, offloading and ancillary services for Russian crude loaded on or before 17 April, through 17 June 2026 ¹. Treasury Secretary Scott Bessent framed the extension as helping 'the most vulnerable nations' access stranded cargoes.

The 48-hour gap between GL 134B's expiry and GL 134C's issuance is the second consecutive enforcement cliff Treasury has run and then patched . GL 134A through GL 134C now form a pattern of monthly bridges rather than termination: Treasury manages the waiver in 30-day windows it can withhold, while the wider sanctions architecture, including the Rosneft and Lukoil Specially Designated Nationals (SDN) redesignations Bessent confirmed on 16 April , remains in place.

The Cienfuegos refinery in Cuba, which had been receiving Russian crude under GL 134B sanctions cover, loses its US licence on 17 June. The new text cuts Cuba from coverage alongside Iran, North Korea and occupied Ukrainian territories. Cuba's grid recovery had been built on that Russian supply line; the island's roughly 337 MW relief contribution from Cienfuegos throughput is now on a clock with no obvious replacement.

The Cuba carve-out matters because it reveals what the GL 134 series actually is. A pure market-stability instrument would treat all third-country buyers identically; a foreign-policy lever picks winners and losers. Bessent has just used the same authorisation to keep Indian and Chinese refiners covered for another month while pulling cover from a single politically isolated buyer. The enforcement mechanism for in-transit Sovcomflot cargoes already loaded under GL 134B is not detailed in the published licence, which leaves the Cienfuegos restart pathway dependent on Treasury clarification that has not yet arrived.

Deep Analysis

In plain English

The US government controls which countries can legally handle Russian oil through a series of special licences. On 18 May it issued General License 134C, the third monthly bridge, and Cuba lost its coverage. Cuba had been getting Russian oil through a previous version of the licence. Its main refinery at Cienfuegos loses US permission to receive Russian oil from 17 June onwards. Cuba's electricity system has been in crisis for years and depends on that oil. The US is using the monthly licence like a dial it can turn. Countries it wants to keep on-side (India, China) stay covered. Countries it wants to pressure (Cuba, Iran) get cut out. Russia still gets to sell its oil to the covered buyers, but the US controls who those buyers are.

Deep Analysis

Root Causes

The GL 134 rolling series reflects a structural contradiction in US Russia policy: the SDN redesignations of Rosneft and Lukoil on 16 April were politically necessary to maintain sanctions credibility with European allies, but the market impact of hard enforcement on both companies simultaneously would have sent Brent above $120 and created humanitarian fuel shortages in six or seven smaller economies dependent on Russian crude.

The Cuba carve-out has a separate root cause. Cuba's Cienfuegos refinery had been receiving Russian crude under GL 134B with Washington's tacit acceptance. Cutting Cuba specifically while keeping India and China covered signals that Treasury is using the waiver to enforce foreign-policy priorities unrelated to Russia sanctions: Havana's alignment with Moscow and Venezuela on hemispheric issues made it the expendable buyer in the 17 June reset.

What could happen next?

Precedent
The Cuba exclusion establishes that OFAC can use the GL 134 series to impose country-specific costs independent of the wider Russia sanctions regime, turning a market-stability tool into a precision foreign-policy instrument.
Medium term · Assessed
Risk
If GL 134D does not appear before 17 June, Asian refiners holding in-transit Russian cargoes face a brief period of legal uncertainty that could spike charter rates and insurance premiums for the shadow fleet.
Immediate · Reported
Consequence
Cuba's grid recovery, which had been partially stabilised by Cienfuegos throughput, faces renewed electricity crisis from 17 June without an identified replacement crude supply.
Short term · Reported

Source Landscape

This story draws on neutral-leaning sources from Austria

Austria

Primary parallel: The US grain embargo against the Soviet Union (January 1980, following the Afghanistan invasion) demonstrates how a foreign-policy sanctions lever operated through selective exclusions. President Carter exempted 8 million tonnes already contracted before imposing the ban, creating an enforcement gap structurally identical to GL 134C's loaded-before-17-April carve-out.

The grain embargo was eventually lifted in April 1981 without achieving its stated objectives; the managed-exclusion approach was later cited as a model for running commodity sanctions without market disruption.

Counter-parallel: The secondary sanctions architecture the US used against Iran from 2012 onward shows the alternative path: no rolling general licences, hard cliffs with country-specific wind-down periods, and active enforcement against third-party buyers.

That approach achieved significant Iranian oil revenue reduction but at the cost of sustained market volatility and sustained diplomatic friction with India and China. Treasury appears to be deliberately choosing the grain-embargo model over the Iran-2012 model.

The immediate market impact of GL 134C is asymmetric. Asian refiners (Indian Oil, Hindustan Petroleum, Bharat Petroleum, and Chinese Rongsheng) read continued access through mid-June; their purchasing books are intact. Cuba's Cienfuegos refinery, which processed roughly 65,000 barrels per day of Russian crude, faces a hard stop on 17 June with no confirmed alternative supply.

For Russia, the 30-day bridge structure preserves the discount window for the two largest third-country buyers (India and China) through mid-June. After that, a GL 134D decision becomes the market signal. If Treasury does not extend, the effective tightening on Russian seaborne crude could remove 400,000-600,000 barrels per day of demand, compressing the Urals discount to Brent from current levels.

Consensus view: The Peterson Institute for International Economics' Anna Gelpern and the Atlantic Council's Brian O'Toole both assess the GL 134 rolling series as a managed permanent instrument rather than a wind-down path.

Each 30-day bridge resets the baseline: markets, refiners, and shipping firms plan to the next licence rather than to termination. The Cuba exclusion on 17 June is the first evidence that Treasury is using the monthly window to impose country-specific costs independent of the core sanctions architecture, alongside its market-stability function.

Counter-view: Moscow's Institute of World Economy argues that the rolling bridges are structurally weakening Western sanctions credibility. A sanctions regime that repeatedly extends its own waivers signals to third-country buyers that the enforcement cliff is not real. Iranian and North Korean exclusions from GL 134C carry no enforcement mechanism for in-transit cargoes already loaded, leaving the actual bite of exclusion at Treasury's discretion rather than the licence's text.

Key tension: Whether the GL 134 series can maintain deterrence value on Russian crude while functioning as a permanent market-management tool, or whether 30-day bridges eventually become the de facto norm that third-country buyers treat as indefinite.

First Reported In

Update #17 · Istanbul talks, refineries dark, deficit overruns

IAEA· 22 May 2026

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Causes and effects

Caused by

OFAC GL 134B expires 16 May, no successor

GL 134B expiry on 16 May triggered the 48-hour gap before GL 134C was issued on 18 May

Occurred 16 May 2026

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This Event

Treasury Drops Cuba From Russian-Crude Waiver

A third consecutive 30-day rolling licence confirms Treasury is running the Russian-crude waiver as a managed permanent instrument, and the Cuba exclusion turns that instrument into a country-specific foreign-policy lever.

Different Perspectives

Iran human rights monitors (Amnesty International, Iran HRM, Hengaw)

Monitors documented 30 women held on capital moharebeh charges in a basement prison ward, Benyamin Naqdi's death sentence with a forced-confession broadcast, and 39 political executions since February. Iran's security courts have processed protest cases at uninterrupted wartime tempo regardless of the diplomatic track.

Lloyd's of London (war-risk underwriters)

Lloyd's held its Hormuz war-risk designation at $10-14 million per voyage while Brent fell 19%, maintaining a structural divergence from futures pricing. Underwriters require a UN Security Council resolution or government certification letter, not diplomatic optimism, before de-listing the strait.

Oman (Sultan Haitham's government)

Muscat issued a mine alert in its own territorial waters while denying any Hormuz toll plan after US Treasury threatened sanctions. A suspected mine in Omani waters on the same weekend as US financial pressure forces Muscat to demonstrate sovereignty without appearing to choose sides.

China (PRC)

Beijing sent scholars rather than its defence minister to Shangri-La for the second year running and addressed Taiwan and multilateralism without mentioning Iran. China maintains its bilateral energy corridor protection with Tehran while refusing the diplomatic exposure of a public position at multilateral forums.

Iran Supreme National Security Council

The SNSC framed the unsigned MOU as a 10-point Iranian victory with enrichment already recognised, and the foreign ministry rejected Trump's nuclear conditions within hours. Tehran treats each unsigned day as validation that Iran has retained its stockpile without surrendering it.

Trump administration (CENTCOM/White House)

Trump posted three non-negotiable public conditions while CENTCOM disabled a commercial ship and Hegseth threatened resumed strikes from Singapore. The administration treats the unsigned MOU as leverage to extract maximum Iranian concessions before any ceasefire instrument is committed to paper.

Key Figures

GL 134B expiry16 May 2026

GL 134C cargo cutoffLoaded on or before 17 April

GL 134C licence expiry17 June 2026

In everyday terms

UK pension funds and institutional investors with exposure to Indian refining majors (Indian Oil is partially listed and tracked by emerging-market indices) face a secondary risk if Treasury's country-specific exclusions accelerate. A hard GL 134D cliff in mid-June would compress Urals-Brent spreads and reduce the refining margin Indian firms had been banking.

What’s Uncertain

GL 134C enforcement on in-transit Sovcomflot cargoesThe licence text does not specify the enforcement mechanism for Sovcomflot vessels already loaded for Cienfuegos under GL 134B cover. OFAC has not published supplementary guidance. Whether those cargoes can complete delivery before 17 June is legally ambiguous.

GL 134D decision timelineA fourth rolling bridge before 17 June would confirm the permanent-management interpretation. Treasury has given no public indication of its intention; the 48-hour gap between GL 134B and 134C suggests the decision window may again run to the last moment.

Sources

1 centre

Austria

Neutral

IAEA Update 349: IAEA Director General Statement on Situation in UkraineUN nuclear watchdog based in Vienna

Entities Involved

OFAC →Scott Bessent →General License 134B →Cuba →Camilo Cienfuegos refinery →

Evidence & sources

1 source

SourceUS Treasury (OFAC), 'General License 134C: Authorizing Certain Transactions Related to the Delivery of Russian Crude Oil and Petroleum Products', 18 May 2026

Understand the Context