Shale gas 'a game changer'

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The chief executive of the Middle East's oldest private oil and gas company says that shale gas is "a game changer".

But Crescent Petroleum's Majid Jafar also told Today programme business presenter Simon Jack that the growth of unconventional energy sources highlights the need for a "proper long-term strategic energy policy" rather than one which is "just reactive or politically expedient".

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