Security assurance

Expression of doctrine by a nuclear-armed nation

A security assurance, in the context of nuclear warfare, is an expression of a political position by a nuclear-armed nation intended to placate other non-nuclear-armed nations. There are two types of security assurance: positive and negative. A positive assurance states that the nation giving it will aid any or a particular non-nuclear-armed nation in retaliation if it is a victim of nuclear attack. A negative assurance is not the opposite but instead means that a nuclear-armed nation has promised not to use nuclear weapons except in retaliation for a nuclear attack against itself.

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