Nuclear war: a close look at its horrors

All of understand that a nuclear war will wipe out much of the planet, that there are enough nuclear weapons with the US and Russia to kill the world's population several times over. But how exactly would a nuclear war unfold? 

The Economist reviews a couple of books that sketch out the nightmare. Let us say North Korea launches a nuclear attack on the USor a Russian submarine fires nuclear missiles off the West Coast of the US.Then, here is a possible sequence:

The American satellites which pick up the North Korean launch have sensors “so powerful they can see a single lighted match from 200 miles away”, she writes. Within 15 seconds radars can work out that the missile is headed for America. It will take just over half an hour to arrive. Once the president has been briefed he has six minutes to make a choice.

A Russian submarine off America’s west coast could launch its full complement of missiles at all 50 states at once in 80 seconds. Even if an American submarine was close behind it could not fire a torpedo in that time, notes one expert. That fact is said to have shocked America’s navy chief when it was revealed to him in 1981. Missiles launched from close to the American coastline would take little over seven minutes to hit their target.

American missiles bound for North Korea must overfly Russia by dint of geography. American leaders cannot get Russia’s president on the phone. Russia’s sub-par early-warning satellites, which have indeed been known to confuse clouds for plumes, mistakenly see hundreds of missiles incoming. The Kremlin attacks America. America responds. There are 100 “aimpoints”—jargon for targets—in the greater Moscow area alone.

Another book shows how deeply the scientific community is divided over the issue:

Some are gung-ho about the importance of nuclear deterrence, brandishing charts which show how deaths from major wars plummeted after the invention of the bomb. Others are equivocal, expressing opposition to nuclear weapons while insisting that someone has to ensure that the ones which exist remain safe and reliable. Still others seem deeply conflicted, preferring to emphasise the civilian applications of their research. “I wonder if the activists on the outside understand that there are those of us on the inside that share many of their goals,” says one scientist at Los Alamos, professing support for (eventual) disarmament. “That’s not an extreme position here at all.”

You could say mankind has carried on like this for over six decades and that deterrrence has worked. But the men who manage nuclear arsenals, it appears, continue to have sleepless nights.