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Estonia says detaining Russia's tankers in Baltic Sea is too risky

Published by Global Banking & Finance Review

Posted on April 10, 2026

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· Last updated: April 11, 2026

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Estonia says detaining Russia's tankers in Baltic Sea is too risky
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By Andrius Sytas VAINDLOO ANCHORAGE, Estonia, April 10 (Reuters) - NATO member Estonia will refrain from detaining Russia's "shadow fleet" vessels in the Baltic Sea, worried that seizing oil tankers

Estonia: Detaining Russian Sanctioned Tankers in Baltic Sea Deemed Too Risky

Estonia's Approach to Russian Sanctioned Tankers in the Baltic Sea

By Andrius Sytas

Estonia's Stance on Detaining Russian Vessels

VAINDLOO ANCHORAGE, Estonia, April 10 (Reuters) - NATO member Estonia will refrain from detaining Russia's "shadow fleet" vessels in the Baltic Sea, worried that seizing oil tankers and other ships sanctioned by the West could lead Moscow to defend them militarily, a senior commander said on Friday.

Britain and other European nations, including France, Belgium and Sweden, have stepped up efforts to detain ageing tankers used by Moscow to secure vital funding for its four-year war against Ukraine.

But Estonia, the northernmost Baltic state located close to Russia's main oil and fuel export facilities in the Gulf of Finland, is practicing restraint after an unsuccessful attempt to board a Russian vessel last year.

Risk of Military Escalation

"The risk of military escalation is just too high," Estonia's Navy Commander Ivo Vark told Reuters.

In May 2025 Estonia said Moscow sent a fighter jet into NATO airspace over the Baltic Sea during an Estonian attempt to stop an unflagged Russia-bound oil tanker it believed was defying Western sanctions.

The jet eventually escorted the oil tanker into Russian waters.

Increased Russian Military Presence

Patrols and Naval Activity

TANKERS AWAITING OIL CARGO

Since then, Moscow has launched a permanent patrol of two or three armed military vessels in the Gulf of Finland, and also deployed more ships elsewhere in the Baltic Sea, along the lanes used by tankers carrying Russian oil, Vark said.

"The Russian military presence here in the Gulf of Finland has become much, much more evident," Vark said.

Estonia's Response Strategy

Only in the case of imminent danger, such as damage to underwater infrastructure or oil spills, would Estonia consider intervening, he added.

"Obviously in the Atlantic Ocean and also the North Sea there's very little Russian presence so it gives you a lot more time and more liberty to act upon those vessels as the risk for military engagement and escalation is much lower," Vark said.

Impact on Oil Tanker Traffic

Reuters reporters aboard an Estonian navy vessel in the Gulf of Finland on Friday observed a Russian navy corvette near a large group of idle tankers awaiting their turn to enter a nearby Russian port and load oil.

The number of tankers at the Vaindloo Anchorage in Estonia's exclusive economic zone has tripled to around 30-40 this week as recent Ukrainian drone attacks on Russian ports disrupted their loading schedule, Vark said.

Kremlin's Position on Sanctions and Free Passage

The Kremlin, which views sanctions as a malign attempt to crush its economy, says its ships have the right to free passage in the Baltic Sea and that Russia is ready to respond to any attempt to stop them.

(Reporting by Andrius Sytas, editing by Terje Solsvik and Christina Fincher)

Key Takeaways

  • Estonia’s Navy Commander cites danger of military confrontation as reason for restraint, despite other European nations increasing tanker detentions.
  • Russian military presence in the Gulf of Finland has intensified, with patrols and corvettes escorting tankers amid drone attacks disrupting oil traffic.
  • Europe’s broader crackdown on the “shadow fleet” includes coordinated sanctions, ship inspections, and occasional seizures, but enforcement remains inconsistent.

Frequently Asked Questions

Why is Estonia refraining from detaining Russian tankers in the Baltic Sea?
Estonia considers the risk of military escalation by Russia too high if they attempt to detain sanctioned vessels.
What happened when Estonia previously tried to stop a Russian oil tanker?
A Russian fighter jet entered NATO airspace and escorted the tanker into Russian waters, leading Estonia to increase caution.
How has Russia responded to Western attempts to detain its tankers?
Russia has increased military patrols in the Gulf of Finland and says it is ready to respond to any attempts to stop its ships.
Under what circumstances would Estonia consider intervening against Russian tankers?
Estonia would consider intervention only in cases of imminent danger, such as damage to underwater infrastructure or oil spills.
Why has there been an increase in tankers at the Vaindloo Anchorage?
Ukrainian drone attacks on Russian ports have disrupted loading schedules, causing a buildup of tankers in Estonian waters.

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