US sanctions, the collapse of the Gunvor deal and the fate of the Lukoil Neftohim Burgas refinery

Exclusive. The US imposed sanctions on Russia's Lukoil on October 22, 2025, under Executive Order 14024, and ordered the company to complete all transactions with foreign assets by November 21. Lukoil agreed to sell them, but the key buyer Gunvor withdrew the offer after a signal from Washington [1]. Against the background of the stalled deal, Bulgaria is preparing for state control over the Burgas refinery, which supplies a significant part of the domestic fuel market [6].

Sanctions, Gunvor's refusal and the imbalance of the deal

On October 30, Lukoil announced that it had accepted Gunvor's offer to purchase the company's international assets, including the Burgas refinery. [1] Gunvor is registered in Cyprus and has a Swiss operating structure, making it one of the largest independent energy traders in the world.

On November 6, Gunvor withdrew the offer after the US Treasury Department made it clear that a license for the deal would not be granted [1]. Washington called the company a “puppet of the Kremlin”, in the most severe reaction in the US sanctions policy against Russian energy assets in Europe. Britain simultaneously supports the sanctions approach, restricting Lukoil’s operations in its financial market [3].

According to Bloomberg and the Guardian, the key element was the financial structure of the deal. Lukoil valued its international assets at around $10 billion, while Gunvor offered around $3 billion. [2][3] This imbalance increased Washington’s suspicions that the deal could be used as a non-transparent channel to maintain Russian influence or circumvent sanctions. It was important for the US to ensure a “clean break” between Lukoil’s assets and any buyer.

Lukoil provides about 2% of global oil production [4], which makes sanctions pressure significant not only for the company but also for the global market.

Grace period and additional risks

After the deal was blocked, Lukoil asked the US Treasury Department to extend its 30-day grace period, which ends on November 21 [4]. The company is not in time to complete the asset sale within the established time frame, and without an extension, a significant part of its international presence will be at risk of chaotic loss of value. According to analysts, assets worth about $10 billion in Europe, Latin America and Iraq are at risk [3].

Analysts also note possible difficulties with repatriating funds from sales if deals are made under deadline pressure [1].

Bulgaria strengthens control and security of Burgas refinery

Bulgaria is the most vulnerable country in this process.

The Lukoil Neftohim Burgas refinery is the largest in the Balkans and the country's largest company, with revenues of around €4,7 billion in 2024. [6] It processes 7–8 million tons of oil annually and supplies a significant portion of the domestic market. According to the state reserve, the country has around 35 days of gasoline and 50 days of diesel reserves.

The government has imposed temporary restrictions on fuel exports and passed a law on state control over refineries. [6] The law provides for the appointment of a special administrator who will have the right to vote with Lukoil shares in Bulgaria and approve the sale of the stake to a new owner.

The president vetoed it, but parliament overrode it.

Amid the tensions, Bulgaria has stepped up physical security at the facility. The Defense Ministry has redeployed anti-drone systems and military police are monitoring the perimeter. [6] The Defense Ministry warns that after November 21, contractors may refuse to make payments to Lukoil entities, which poses a risk of partial or complete shutdown of the refinery. [6]

Implications for the region and Ukraine

The collapse of the deal demonstrates the US’s tough stance: Russian assets cannot be transferred to entities that raise doubts about their independence from Russia [1][3]. In the short term, this puts pressure on Bulgaria and regional fuel markets. In the long term, it reduces Russia’s influence on European energy.

For Ukraine, the consequences are twofold. On the one hand, price fluctuations and restructuring of logistics in the Balkans are possible. On the other hand, the strengthening of sanctions mechanisms and the withdrawal of Russian capital from critical EU infrastructure reduce Moscow's political opportunities in the region.

What does the situation mean for the future?

The development of events depends on whether Bulgaria and Lukoil manage to find a buyer who will satisfy Washington's demands [4][5]. If not, there are possible supply disruptions and financial risks for the Balkans. If a deal is agreed with the new owner, the refinery will continue to operate without Russian control, and the EU will receive another step towards reducing its dependence on Russia.

Sources

[1] Reuters — Gunvor refusal report and sanctions pressure on Lukoil — 06.11.2025

[2] Bloomberg — Lukoil Asset Valuation and Gunvor Deal Parameters — 10.11.2025

[3] The Guardian — article about the “fire sale” of Lukoil assets — 13.11.2025

[4] Reuters — Lukoil request for grace period extension — 12.11.2025

[5] US Treasury — press release regarding sanctions under Executive Order 14024 — 10/22/2025

[6] Reuters — Burgas refinery security tightened and Bulgaria's actions — 10.11.2025

Maurice K for Newsky © 2025