UK Strikes at Russia's Oil Lifeline: 100 Russian Oil Tankers Sanctioned in Shadow Fleet Crackdown

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The United Kingdom has unveiled its largest sanctions package yet against Russia, targeting Russia's so-called "shadow fleet" of oil tankers that have enabled Moscow to circumvent Western sanctions since the Ukraine invasion. The unprecedented measure, set out by Prime Minister Keir Starmer at a meeting of northern European leaders in Oslo, is designed to strangle one of the Kremlin's main sources of finance for its war effort and safeguard critical European infrastructure.

Introduction
In a dramatic bid to wrap the economic noose around Russia, the UK government is sanctioning as many as 100 oil tankers connected to President Vladimir Putin's shadow fleet. These tankers, flying under the radar with unclear ownership and dubious insurance, carried more than $24 billion worth of Russian oil since the beginning of 2023, bypassing Western sanctions and posing risks to European subsea infrastructure. The measures extend to people, businesses, and insurers facilitating these operations.

Key Points
Scope and Number of the Sanctions
The UK is sanctioning as many as 100 Russian tankers, the biggest such move by a nation to date.

The targeted ships have transported over $24 billion worth of oil since the beginning of 2023, directly financing Russia's war with Ukraine.

More sanctions strike five Russian oil executives, two oil firms (BX Energy and Nord Axis), and insurance companies (such as Norway's Romarine and Russia's Soglasie) financing the shadow fleet.

Strategic Objectives
The objective of the sanctions is to deconstruct the operation of the shadow fleet, denying the Kremlin a crucial oil windfall.

Britain wants to make these ships an economic burden to Russia, increasingly weakening its war economy.

The action is aimed at safeguarding key subsea infrastructure, including undersea cables, which have been reportedly damaged by careless navigation of these old tankers.

Wider Security and Diplomatic Implications
The move comes on the heels of the Joint Expeditionary Force (JEF) summit in Oslo, where European leaders are giving top priority to safeguarding subsea infrastructure and strengthening military ties with Ukraine.

The UK is the leader of the "Nordic Warden" system, tracking 22 priority maritime areas in response to recent events, such as damage to Baltic underwater cables.

The UK has now sanctioned more shadow fleet vessels than any other country, with previous sanctions in December 2024 aimed at 133 vessels.

Implications and Enforcement
Sanctioned tankers will be prohibited from accessing British ports and could be detained in UK waters.

The British government claims that Western sanctions have already slashed over a third of Russia's oil and gas income since 2022.

The EU is also preparing to follow suit, with over 300 tankers to be sanctioned throughout Europe.

Official Statements
"Russia's threat to our national security should not be underestimated. That is why we will do everything within our power to dismantle his shadow fleet operation, deny his war machine oil revenues and safeguard the subsea infrastructure that we depend on for our daily lives,"

Prime Minister Keir Starmer

Sources: The Moscow Times, UK Government Announcement, Safety4Sea, BBC News, Reuters, The Maritime Executive