Acoustic weapon

Israel is considering using an unusual new weapon against Jewish settlers who resist this summer's Gaza Strip evacuation - a device that emits penetrating bursts of sound that leaves targets reeling with dizziness and nausea.

Security forces could employ the weapon to overcome resistance without resorting to force, their paramount aim. But experts warn that the effects of prolonged exposure are unknown.

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Update at 4.30: Or perhaps they won't:

For the second time in a week, security forces were forced to use "The Screamer," a device that emits high-pitched sound waves, in order to disperse scores of demonstrators protesting the construction of the security fence near the village of Bil'in on Friday.

... While the device succeeded in distancing the demonstrators for a number of minutes, they returned shortly after and troops were forced to use tear gas and rubber bullets to disperse them.