The Russian Embassy in London has condemned the step as piracy

Russia has slammed a UK after it threatened to "interdict," board and seize vessels in British waters it deems as being part of an alleged Russian 'shadow fleet.'

Moscow has denied operating such a fleet and has condemned seizures of vessels on the high seas as "piracy," stressing that it would take "all measures" to defend shipping.

In a statement on Wednesday, Downing Street said that London would coordinate with its allies in the 'Joint Expeditionary Force' (JEF) - a group of ten European NATO members - to "close off UK waters, including the [English] Channel, for sanctioned vessels."

The goal is to force vessel operators to "either divert to longer, financially painful routes, or risk being detained by British forces," the statement said.

In recent weeks, British military and law specialists have prepared scenarios for cases "including boarding vessels that don't surrender, are armed, or use high tech pervasive surveillance to evade capture," it said.

In each potential seizure, British law enforcement, military and energy market specialists will consider a ship before making a recommendation to ministers prior to execution, Downing Street said.

The Russian Embassy in London condemned the "deeply hostile step," accusing the UK of planning to carry out "acts of piracy."

"The stated objectives - combined with the timing of this announcement - leave no room for doubt that the recent escalation of Ukrainian attacks on Russian energy infrastructure also occurred with the involvement of the British side," it said in a statement on Thursday.

Russia has long described London as a key force behind the Ukraine conflict, accusing it of directly participating in Ukrainian long-range strikes on Russian cities using UK-made weapons.

Kiev's forces have increased attacks on Russian oil and gas infrastructure in recent months. Ukraine has also attacked ships it sees as linked to Russia in the Black Sea with naval drones.

On Thursday, Türkiye's Foreign Ministry reported that a Turkish-operated tanker in the country's economic zone was hit by naval drones. It did not assign blame at the time of writing.

(RT.com)