Putin's 'nuclear demonstration'... Detect the movement of nuclear equipment and nuclear torpedoes

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As it is known that a Russian submarine equipped with a nuclear torpedo has sailed into the Arctic Ocean, there is growing concern that Russian President Putin, who is on the defensive in the war, will launch a full-scale nuclear demonstration.

There are also reports that the US government has begun reviewing a wide range of scenarios, including the possibility of Russia's use of tactical nuclear weapons.

Kwak Sang-eun is a correspondent in Paris. 

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Russian military train was caught moving from central Russia toward the front of Ukraine.

The Times reported that the train was linked to the 12th General Bureau of the Russian Ministry of Defense, which is responsible for the maintenance, transport and management of nuclear weapons.

A Russian submarine carrying the nuclear torpedo Poseidon, called the 'weapon of the end of the world', has also been found to have set sail for the Arctic Ocean.

There are speculations that a nuclear test is imminent in the Kara Sea region of Russia's Arctic Ocean.

As Russian President Putin, who has repeatedly threatened nuclear weapons, is on the defensive in the war, concerns are growing that he may be launching a full-fledged nuclear force demonstration.

An ex-Russian oil tycoon who was expelled by Putin and is in exile in the UK has mentioned the possibility that Putin's threat will not stop with words.

[Mikhail Khodorkovsky/Former Russian oil tycoon: If the war is not won even with the mobilization of the military, (President Putin) must also consider the use of tactical nuclear weapons.]

CNN reported that the US government is considering countermeasures for a wide range of scenarios, including the possibility of Russia's use of tactical nuclear weapons.