How much more dangerous is the world?

There is too much talk of nuclear weapons and miscalculations. Antonio Guterres, UN secretary-general, has warned that the world is just one misunderstanding or miscalculation from nuclear annihilation, and Iran's atomic chief has claimed his country is now able to make nuclear weapons. As for Putin, he has already threatened the West with a nuclear strike if they were to dare to intervene in Ukraine. When the word nuclear becomes such an easy one to say that's what worries me and should worry everyone. I don't think Putin has made any decision about going nuclear but nor do I think he has totally rejected the possibility. As each day goes by Putin seems to get more and more aggressive and predatory, despite suffering military blows in Ukraine, and in that sort of mood, there have to be concerns that he will think about nuclear weapons as usable rather than as a never-to-be-used deterrent. As for Iran, the chief atomic scientist insists that his country doesn't want to make a nuclear bomb. But we have heard this argument many times before over the last 15 years. I believe like most people who have followed this story for so long, Iran has every intention of developing a nuclear bomb because they know it will give them power. And power in this dangerous world is key to everything. Putin knows that, Xi Zinping knows that and the Supreme Ayatollah in Iran knows that. Guterres, I fear, is right.