FBI and Apple vie for public support in dispute over California shooter's iPhone

FBI director James Comey says he hopes people will 'stop saying the world is ending', while Apple CEO Tim Cook argues that iPhone user data is 'under siege'

The director of the FBI has pleaded for responsible dialogue and calm in an escalating public battle with Apple, even as the company's chief executive, Tim Cook, vowed to continue a legal fight that carries widespread implications for digital privacy and law enforcement.

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