It is difficult to say about this now that they will decide to release nuclear weapons into the air, then why are they gathering people for war. Maybe later they will use nuclear weapons, but not now.
Putin is now very actively intimidating Ukraine and the whole world with the use of nuclear weapons in his war against Ukraine. This is done because on the fronts of Ukraine in the Russian occupation army there is a complete collapse. In the south, approximately 25,000 of the most combat-ready grouping of Russian troops is surrounded by the Armed Forces of Ukraine on three sides, and on the fourth side is pressed against the wide Dnieper River and, without the supply of equipment and ammunition, is experiencing difficulties in everything, including warm clothing, food and water. At the same time, the Armed Forces of Ukraine methodically deliver accurate strikes with highly effective weapons at command posts and concentrations of enemy military forces and equipment.
The encirclement of part of the Russian troops near the city of Liman in eastern Ukraine is also being completed. For a long time, the Russians ignored the possibility of an organized withdrawal and only yesterday they began to form a column already to break out of the encirclement, but the only route for this is under the fire control of the Armed Forces of Ukraine.
The main part of the Russian professional army has already perished on the territory of Ukraine. Therefore, on September 21, Putin announced mobilization in the country for the further conquest of Ukraine. Seeing his defeat in Ukraine, he also intimidates everyone with the use of nuclear weapons. Russia is now playing very dangerous games for itself, and this can end in a complete catastrophe for it.