The number of nuclear bombs required

I have always pondered this question: What is the number of nuclear bombs required to provide an individual with a sense of security? Is it a singular bomb, a couple, or an extensive arsenal numbering in the thousands? Recently, I stumbled upon a list featuring various countries alongside their corresponding numerical values. The United States and Russia showcased counts nearing five thousand, while India and Pakistan showed three-digit figures.

It is indeed reassuring to acknowledge that these numerous nuclear warheads, working diligently to safeguard our well-being. The peace of mind derived from knowing that if thousands of warheads aim at us, an equal number target our adversaries cannot be understated.

However, let us now delve into this some more: how many of these destructive weapons possess the capability to obliterate our planet? Furthermore, once the initial onslaught commences, who remains capable of launching any remaining missiles? Consider the analogy of a firecracker or ammunition depotonce one spark ignites them, catastrophic explosions follow suit. Thus my original inquiry: amidst such devastation and chaos, who will be left on this Earth to discharge any remaining missiles? And where would they be aiming these missiles?