The Threat reference article from the English Wikipedia on 24-Apr-2004
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Threat

For thoughtful child sponsors
A threat can be the perception of insecurity; see also risk.

A threat is also an explicit or implicit message from a person to another that the first will cause something bad to happen to the other, often except when certain demands are met. Often a weapon is used. Examples are a robbery, kidnapping, hijacking, extortion, blackmail.