Here's something I read recently, it was long and detailed but here's a precis.
People were asking if Putin might now use nuclear weapons as it's not going well in Ukraine.
An expert said nuclear bombs are not the auto-armageddon people fear.
Hiroshima and Nagasaki were flattened because the buildings were made of wood and paper
But, the brick buildings were still standing.
He said it would take over a 100 to flatten Kiev.
Not only that, he told that the explosive charge to detonate a bomb deteriorates in 5 years and has to be re-setup with fresh explosives, otherwise it's likely not to go off.
Thousands of test nuclear bombs have been set off since ww2 and the world has survived without much trouble.
They are deadly, powerful and nasty but assured mutual distruction is a myth.