How can we justify the assumption that we should, at a given point in a military conflict, initiate the use of nuclear weapons in order to avoid a conventional defeat? (religion-online.org)
The proliferation of nuclear weapons in all of these countries is of grave concern. (politics.stackexchange.com)
The amount of carbon - 14 in the atmosphere peaked in 1962 just before the introduction of an international ban on surface testing of nuclear weapons. (newscientist.com)