Oil Sanctions, Explained
Three of the world's larger oil producers — Russia, Iran and Venezuela — currently sell crude under Western sanctions. None of them has stopped exporting; each has found workarounds, at a real cost in revenue, insurance and market access. Here is how the main tools work, and how the three regimes differ.
The Main Tools
Price cap
- Used against Russian seaborne crude since December 2022: Western shipping, insurance and financial services can only be used for Russian oil sold at or below a set price.
- The US applies $60/bbl for crude; the EU, UK and Canada lowered their cap to $47.60/bbl in September 2026.
- Designed to let the oil keep flowing — avoiding a global supply shock — while squeezing revenue per barrel.
Trade & asset sanctions
- Used against Iran and Venezuela: direct bans on buying their oil, freezing state oil-company assets, and blacklisting tankers, buyers and intermediaries.
- Blocks access to Western capital, technology and spare parts as much as it blocks the oil sale itself.
- Enforced through the US Treasury's sanctions list and secondary sanctions that threaten any company doing business with the sanctioned entity.
Both tools push sanctioned barrels toward buyers and shippers willing to accept the legal and reputational risk — which is what the "shadow fleet" exists to do.
Three Regimes Compared
| Country | Main mechanism | Since | Main workaround |
|---|---|---|---|
| Russia | G7/EU/UK price cap on seaborne crude, plus a widening list of blacklisted tankers | 2022 | Shadow-fleet tankers outside Western insurance; India and China as top buyers |
| Iran | Direct US trade ban and asset freezes; exempt from OPEC quotas as a result | 2018 | Discounted sales to Chinese "teapot" refineries via ship-to-ship transfers and disguised documentation |
| Venezuela | US sanctions on state oil company PDVSA and asset freezes | 2019 | Periodic US licenses (Chevron and others) that permit limited operations |
Full country detail: Russia oil · Iran oil · Venezuela oil.
The Shadow Fleet
What it is
- Tankers of unclear or opaque ownership that carry sanctioned oil while avoiding Western-flagged insurance and shipping services.
- Estimated at 600–700 vessels by early 2026, up from roughly 200–300 when the Russian price cap began in December 2022.
- Used mainly to move Russian crude, with Iranian and Venezuelan cargoes moving through overlapping networks.
Why it matters beyond sanctions
- The large majority of shadow-fleet crude tankers are more than 15 years old — well past the age most mainstream operators retire tankers.
- These vessels typically carry no Western liability insurance, so a spill or collision could leave cleanup and damages largely uncovered.
- Regulators in the Baltic and elsewhere have begun inspecting and detaining shadow-fleet ships over paperwork and insurance gaps, separate from the sanctions themselves.
Oil Sanctions FAQ
What is the G7 price cap on Russian oil?
A rule, in force since December 2022, that lets Western shipping, insurance and financial firms handle Russian seaborne crude only if it is sold at or below a set price — $60 a barrel for crude. The idea is to let Russian oil keep flowing (avoiding a supply shock) while capping the revenue Russia earns per barrel. As of September 2026, the US still applies $60, while the EU, UK and Canada lowered their cap to $47.60 a barrel.
What is the "shadow fleet"?
Tankers, often old and of unclear ownership, that carry sanctioned oil (mostly Russian, also Iranian and Venezuelan) while avoiding Western-flagged insurance, shipping and financial services covered by the price cap and other sanctions. Estimates put the shadow fleet at 600–700 vessels by early 2026, up from roughly 200–300 when the price cap began in December 2022; the large majority of its tankers are more than 15 years old, raising separate safety and spill-risk concerns.
Do sanctions actually stop oil from being sold?
Rarely entirely. Sanctions regimes on Russia, Iran and Venezuela have all reduced revenue, raised costs and diverted trade rather than stopped exports outright — buyers willing to accept the risk (mainly in Asia) keep barrels moving, usually at a discount to the benchmark price. The bigger long-term damage tends to be to future capacity: sanctioned countries lose access to Western technology, capital and equipment needed to sustain aging fields.
Why is Iran exempt from OPEC production quotas?
OPEC has excused Iran from formal output targets since sanctions made its production levels unpredictable and largely outside its own control — the same treatment given to Venezuela and, before the 2011 civil war, Libya. See the Iran oil profile for its current output and export routes.
Which countries currently face major oil sanctions?
Russia (G7/EU price cap and related measures since 2022), Iran (US sanctions, with the oil-specific measures reimposed in 2018 after the US left the nuclear deal) and Venezuela (US sanctions on state oil company PDVSA since 2019, eased periodically through licenses). Each regime works differently — see the comparison below.