Vladimir Putin has threatened the West again saying a direct clash of NATO troops and Russia would trigger a "global catastrophe".
The tyrant made the grave threat while speaking at a news conference in the Kazakh capital Astana today.
He added: "I hope that those who are saying this are smart enough not to take such steps."
Questioned on whether he had any regrets about the war, he answered "no", as he vowed there would be no further mobilisation of Russian civilians.
He also suggested that the mobilisation of reservists, an order issued at the end of September which saw 300,000 drafted into battle, would be coming to an end soon.
It comes after the tyrant was warned his entire army will be "annihilated" if he follows through with nuclear attack threats.
The European Union's foreign policy chief Josep Borrell has hit back at the Russian President's suggestion he could use tactical nukes on Ukraine.
The former Soviet despot chillingly warned last month he wouldn't hesitate to use weapons of mass destruction if his country's territory is threatened.
He told the West "I am not bluffing" but top diplomat Borrell has now retaliated saying "neither" is the EU or NATO, reports the Daily Express.
Putin's national address on September 21 also saw him announce a partial mobilisation of civilians into his armed forces to help turn the tide in his stuttering invasion.
That was followed by the sham annexation of four occupied regions as Russia continues to lose an estimated 500 soldiers a day to death or injury.
Borrell has hit back over Putin's threats, warning him any nuclear attack on Ukraine will see his forces wiped out.
The EU's top diplomat said at the opening of a Diplomatic Academy in Brussels: "Putin is saying he is not bluffing.
"Well, he cannot afford bluffing, and it has to be clear that the people supporting Ukraine and the European Union and the Member States, and the United States and NATO are not bluffing neither.
"Any nuclear attack against Ukraine will create an answer, not a nuclear answer but such a powerful answer from the military side that the Russian Army will be annihilated."
This is the second huge warning directed at Putin in a matter of hours as fears continue to swirl over a possible Russian nuclear attack on Ukraine.
NATO Secretary-General Jens Stoltenberg said the circumstances in which the defence alliance might have to use nuclear weapons are "extremely remote" but warned there would be "severe consequences" if Russia made such a move.
He told a news conference after a meeting of NATO defence ministers: "There would be severe consequences if Russia used nuclear weapons, any kind of nuclear weapon against Ukraine.
"We will not go into exactly how we will respond, but this will fundamentally change the nature of the conflict.
