Source:
Washington Post "Britain raised its international terrorism threat level Friday from "substantial" to "severe," its second-highest level, Home Secretary Alan Johnson said.
"'This means that a terrorist attack is highly likely, but I should stress that there is no intelligence to suggest that an attack is imminent,' Johnson said in a statement. He added that Britain's Joint Terrorism Analysis Center "makes its judgments based on a broad range of factors, including the intent and capabilities of international terrorist groups in the UK and overseas.
"A Home Office advisory said the threat level meant people should remain on alert for danger, including looking for suspicious bags on public transport, but added that the risk of being caught up in an attack was very low."
Read more:
http://www.washingtonpost.com/wp-dyn/content/article/2010/01/22/AR2010012204503.html
The warning system is meant to ... guarantee people weren't caught off guard or left blaming the various agencies involved for failure to warn the public in the event of an actual attack ... after the fact.
Personally, I don't see any other benefit to doing it this way. They might as well warn specific terror planners to back off because ... they're 'onto them'.
I don't quite get it. They won't specify the nature of the related info, as if that would ... really make some terror planners ... harder to catch ... than if they just made it a 'non-specific' nationwide public alert.
Or maybe its just a kind of psy-ops program thing which really works like a charm, and all the fear and confusion created is minor compared with the way it ... actually plays out.
Bureaucrats always know how to cover the bases.
Don't say we didn't warn you.