Russia said the four Ukrainian provinces announced the merger, including Donetsk, Lugansk, Kherson and Zaporizhzhia, being protected by nuclear weapons.

All of these territories are non -infringing parts of Russia and are protected with the same level of security as the rest of the country, Kremlin spokesman Dmitry Peskov responded to the reporter today today.

The nuclear cell is the term used to refer to a country that owns nuclear weapons committed to protecting territorial integrity or allies with mass destruction weapons.

This is the first time Russia has confirmed to use nuclear weapons to protect the four Ukrainian provinces they just merged.

US President Joe Biden said on October 6 that Putin's threat brought the world closer to the end of the world than at any time since the Cuban missile crisis in 1962, when many people were worried about danger.

Power spokesman Kremlin Dmitry Peskov at a press conference in Samarkand, Uzbekistan on September 16.

Nearly 8 months since the Ukrainian conflict broke out, some analysts said that Putin's possibility that Putin used nuclear weapons had increased after the Russian troops witnessed many steps back on the battlefield.

Some other analysts say the nuclear risk has been exaggerated, saying that Russia will benefit disadvantages if escalating in this direction.

General Eirik Kristoffersen, head of the Norwegian armed forces, said the West should listen carefully what Mr. Putin talks about nuclear weapons, but believes that Putin has no reason to use nuclear weapons.

NATO this week conducted nuclear exercises and said that Russia was about to organize similar activities.

The Russian president last month declared that the territorial areas that Russia merged will be part of this country forever.

Russia is losing advantage in 4 newly merged areas, but Peskov said Moscow is continuing the process of integrating 4 provinces into the country's legal, economic and security system.

Moscow areas controlled in four provinces of referendum merged into Russia.

Russia raided the missile in the hope of being able to stop Ukraine's progress on the battlefield, but in reality could disappoint Moscow, according to experts.

The Ukrainian army did not choose to confront the Russian overwhelming fire, but tried to hit the weakest links to gradually change the battlefield.

Merging 4 Ukraine provinces, Putin not only wanted to create a political victory, but also expected to achieve a strategic position and increase economic pressure with Kiev, according to experts.