Nick Clegg said he was inspired to be interested in politics by his history teacher Mr Smith, who "terrified the living daylights" out of him by telling him world war three was imminent.
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The 17-year-old was trapped for 30 hours in Australian shrubland but there was no report of a road accident to help the search.
The expansion of the probe came as Jeremy Corbyn declared Carillion's demise a "watershed moment" that should end "rip-off privatisation".
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