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Since World War II, after the use of atomic weapons on Hiroshima and Nagasaki, the proliferation of nuclear weapons has been an omnipresent problem. It is not only that currently in global arsenals there are enough weapons to destroy life on Earth several times, but that the effects of a nuclear winter resulting from a nuclear conflict would be worse than the direct effects of the conflict itself. This has been discussed in many books, such as the recent The Doomsday Machine by Daniel Ellsberg, published one year ago.

The problem of nuclear weapons has been getting worse in recent years with news of the increasing efforts by North Korea to improve its capacities for launching longrange nuclear missiles and the recent announcement of the United States withdrawal from treaties because of allegations of violations by Russia. In his book, Gerald E. Marsh puts the focus on this, from the viewpoint of a physicist …