"International law is clear.

Ukraine can liberate its territories using any instruments.

Crimea is Ukraine.

Therefore, threats by Russian officials about "retaliatory strikes" are only a confirmation of the intention to commit mass murders and an attempt to intimidate in the traditional style of the Russian Federation.

Always ignore Medvedev," said adviser to the Office of the President of Ukraine Mikhail Padalyak.

"There will be no negotiations in this case (in the case of an attack by the Ukrainian military on Crimea - ed.), there will only be retaliatory strikes.

The whole of Ukraine, which remained under the rule of Kiev, will catch fire," Medvedev said.

He also claims that "Moscow's response could be anything, including nuclear weapons."

The head of the State Duma of Russia Vyacheslav Volodin recently threatened Western countries with "global catastrophe" and "destruction" due to the possible use of weapons of mass destruction by Russia, according to the context of his telegram.

Earlier, the Deputy Chairman of the Security Council Dmitry Medvedev also wrote that a possible attack by the Ukrainian army would allegedly endanger the territorial integrity and existence of Russia.

Such a threat in the Russian nuclear doctrine is one of the reasons for using nuclear weapons.

The USA and its allies have warned Russia - both publicly and unofficially - about the inadmissibility of using nuclear weapons against Ukraine.

The head of the Main Directorate of Intelligence of the Ministry of Defense of Ukraine, Kiril Budanov, believes that Russia will not use nuclear weapons, even if Ukrainian troops continue their offensive and enter the occupied Crimea.