LONDON: Britain provided tracking and monitoring support for a French operation to board a sanctioned Russian oil tanker in a bid to choke off the funds that fuel Russia’s invasion of Ukraine, UK defense minister John Healey said on Thursday.

Healey said this support included a vessel, HMS Dagger, monitoring the tanker as it passed through the Straits of Gibraltar. The ‌tanker, named ‌the GRINCH, is subject to ‌UK ⁠and European sanctions ‌for facilitating trade in sanctioned oil and forms part of a growing web of the so-called “shadow-fleet.”

“Deterring, disrupting and degrading the Russian shadow fleet is a priority for this government,” Healey said in a statement.

“I can confirm that the UK has provided tracking ⁠and monitoring in support of the French operation to board the tanker ‌Grinch.”

He said Britain and its ‍allies were stepping ‍up their response to so-called shadow-fleet vessels, which he ‍described as helping finance Russian President Vladimir Putin’s war against Ukraine.