US Attorney General, Eric Holder, is expected to hold press conference unveiling BP's fine over the 2010 Deepwater Horizon disater in New Orleans this afternoon.
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The world's first ever 'hole in the wall' was installed in Enfield, north London, on June 27 1967.
America says it has "identified preparations" for an attack similar to that which killed at least 86, including 30 children, in April.