File photo of Sir John Sawers (left,) Chief of the Britain's MI6 Secret Intelligence Service, and Jonathan Evans, Director General of MI5 Security Service. The Arab Spring uprisings have given

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File photo of Sir John Sawers (left,) Chief of the Britain's MI6 Secret Intelligence Service, and Jonathan Evans, Director General of MI5 Security Service. The Arab Spring uprisings have given al-Qaeda new arenas in which to rebuild, increasing the chances of home-grown terrorist attacks in Britain, Evans has warned

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