Nuclear umbrella refers to a guarantee by a nuclear-weapon state to defend a non-nuclear allied state. It is usually used for the security alliances of the United States with Japan, South Korea, the North Atlantic Treaty Organisation and Australia, originating with the Cold War with the Soviet Union. For some countries, it was an alternative to acquiring nuclear weapons themselves.
Tags Australia Non-nuclear allied state North Atlantic Treaty Organisation Nuclear umbrella Nuclear weapon state Nuclear Weapons Security alliances of the United States with Japan South Korea Soviet Union
Until quite recently it was thought that there were no abundant life forms on this …