Researchers at his institute have devised a prototype vaccine that targets a vulnerable spot obscured by the surface of the virus.

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Rather than attacking the Man of Steel (I mean, really, how would that work?), we hit him in his last vulnerable spot.

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It takes a lot of practice to fly model planes precisely, and even experts might have difficulty in hitting a vulnerable spot such as a window.

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The Amazon, Brazil is learning, is both a resource and weak spot, vulnerable to guerrillas, drug traffickers and land-grabbers.

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Without adequate regulation, new financial markets, such as the spot market for RINs, are vulnerable to fraud.

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For now, passive self-defence is recommended: barbed wire to protect vulnerable parts of ships, fire hoses to push pirates away and an alert crew to spot attacks early to allow the ship to take evasive action.

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It is also far more gripping, not least because it is told in the vulnerable but never self-indulgent voice of somebody who loves this part of Turkey, and has a soft spot for all the peoples who have lived, loved, died and killed there.

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