"Not for a minute," yells the cop when I ask if I can park my car near to his heavily fortified post beneath the southern wall of Jerusalem's Old City. He's clearly taking seriously his task of overseeing this high-security project. Above us, Jordanian engineer Raef Nijem negotiates a narrow scaffold in the driving rain. Along with a team of engineers, he is on a mission to investigate and repair a mysterious bulge that has appeared on the side of this historic site. Anywhere else it would have been merely a technical problem, albeit one that called for a complex and careful solution. But in this volatile region it threatened at one stage to spark serious violence.
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