A fleet of Russian nuclear-powered warships and fighter jets is passing through UK territorial waters, amid rising tensions between Moscow and the Western military alliance of NATO.
The Russian flotilla, including the flagship aircraft carrier the Admiral Kuznetsov, sailed down the English Channel on Friday.
Two highly advanced British naval ships are shadowing the vessels, according to Britain’s Ministry of Defense.
The Russian task force is believed to be on its way to the Mediterranean Sea to support the war on terrorists in Aleppo, Syria, according to Western military analysts.
"It's a show of force and a show of capabilities," said Peter Felstead, editor of Jane's Defence Weekly.
"In terms of strike missions, they [the Russians] could just as easily have conducted them with the land-based aircraft they already have in Syria,” told CNN.
Pyotr Klintsevich, first deputy of Russian Senate's Defense and Security Committee, said the Russian-fleet was armed and ready for combat missions.
“We understand that such ships are armed, and that they did not just go for a walk with a walking stick,” he said.
“The fact that today the military ships, including a first-class vessel, go forward - it's part of combat training tasks,” he added.
UK Defense Secretary Michael Fallon said on Wednesday, "When these ships near our waters we will man-mark them every step of the way."
"We will be watching as part of our steadfast commitment to keep Britain safe,” he vowed.
Britain’s Royal Navy has reportedly dispatched its advanced warships, the Type 45 destroyer HMS Duncan, along with the Type 23 frigate HMS Richmond, to track the Russian vessels.
A UK Ministry of Defense spokesman said the Royal Navy is closely monitoring the Russian vessels.
NATO said in a statement that Russia had the right to operate in international waters, but added that the Western military alliance will “monitor the Russian ships as they head for the Mediterranean.”
Russian military experts have denounced the Royal Navy as "weak" and stated Britain is "scared" of Russian nuclear-powered warships - which are due to pass within just one mile (1.6 kilometer) of England.
The Russian Navy said in a statement on October 15 when the ships left Russia the voyage was "to ensure naval presence in the important areas of the World Ocean."
Relations between London and Moscow have been tense over their differences on the conflicts in Ukraine and Syria.
Russia has been engaged in an aerial campaign against terrorist groups in Syria upon a request by the Syrian government of Bashar al-Assad for more than one year.
The UK, along with the United States and some of their allies, has been conducting a so-called anti-terror campaign in Syria and neighboring Iraq for more than two years.
However, they have done little to stop the Takfiri terrorists; instead their air raids have killed many civilians, and caused extensive damage to the country’s infrastructure.
Russia along with the Syrian armed forces, have inflicted heavy losses on the foreign-sponsored militants in the Arab country. Their victories worried the West that has actively been seeking the ouster of President Assad.
The Russian warships will pass close to the British shore less than 24 hours after UK Prime Minister Theresa May called on European leaders to unite against Moscow and stop what she referred to as “Russian aggression” in Syria.
"It is vital that we work together to continue to put pressure on Russia to stop these sickening atrocities in Syria,” she said on Thursday.