No First Use

The UN Secretary General, António Guterres, has warned that the spread of artificial intelligence technology in nuclear arsenals could lead to a nuclear war and has urged the nine nations who currently have nuclear weapons to take their non-proliferation obligations seriously and agree on a mutual pledge not to be the first to use nuclear weapons.
Of the nine, only China and India have a No First Use (NFU) policy with China pledging to 'not to be the first to use nuclear weapons at any time or under any circumstances' and 'not to use or threaten to use nuclear weapons against any non-nuclear-weapons states or nuclear-weapon-free zones at any time or under any circumstances'.
On becoming a nuclear state in 1998, India stated that their nuclear weapons 'are solely for deterrence and that India will pursue a policy of retaliation only' and in 1993 the Russians backtracked on their 1982 pledge against no first use and now have a doctrine that: 'Reserves the right to use nuclear weapons in response to a large-scale conventional aggression' which is similar to the position held by Pakistan, the United Kingdom, the United States, and France
Germany has put forwards proposals that NATO adopt a no-first-use policy, but has always been rejected but in 2022, NATO leaders issued a statement which said that: 'We affirm that a nuclear war cannot be won and must never be fought.'
North Korea's stated policy position is that nuclear weapons: 'Will never be abused or used as a means for preemptive strike' but also reserve the right to use their most powerful military force against  military aggression'.
According to calculations, based on the atomic bombs dropped on Hiroshima and Nagasaki, 100 atomic bombs could destroy about 2 billion lives and the Federation of American Scientists (FAS) have said that the number of nuclear weapons has declined since the cold war from a 1986 peak of approximately 70,300 to an estimated 12,100 today, many times more powerful than those already used which is enough to destroy all life on Earth many times over.
Madness to keep things which could kill us all? Certainly
The madness ending any time soon? Afraid not.