This columnist would choose these two to have at his back in a knife fight.

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But it is not, primarily, a knife fight between the left and the right.

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Intel is getting paranoid again and bringing a rocket-launcher to AMD's knife fight.

FORBES: Only the Paranoid Resurge

The closest thing to a knife fight has been Mr Gingrich's portrayal of Mr Romney as a callous wrecker of humble livelihoods.

ECONOMIST: Lexington

It doesn't look like the channel's beyond reality programming altogether, with its first two shows being a cooking competition named Knife Fight and its other being a celebrity-based travel show named The Getaway.

ENGADGET

They say not to bring a knife to a gun fight.

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Doctors in Canada have removed a knife blade from a man's back more than three years after he was stabbed in a fight.

BBC: Knife taken from Billy McNeely's back after three years