Vladimir Putin will only resort to using nuclear weapons if Russia faces an "existential threat", such as NATO troops invading Moscow, a former foreign minister has claimed.
Andrei Kozyrev, who served under Vladimir Putin's predecessor Boris Yeltsin in the 1990s, played down the fears that the current Russian President will unleash the country's nuclear forces imminently.
The Mirror reports that international experts are divided on the likelihood of this, with his invasion of Ukraine not going to plan.
