The UK is sending four Apache attack helicopters to the mission in Libya, after approval by the prime minister.

经首相批准，英国将向利比亚派遣四架阿帕奇攻击直升机用于执行任务。

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The Apache helicopter is prized by troops because of its hardiness and versatility
If called upon, they will allow for swifter attacks on a wider range of smaller targets in urban areas.

The Apache helicopters, normally based at Wattisham, in Suffolk, are expected to go into operation within days.

Downing Street says intelligence suggests Col Muammar Gaddafi is "on the run" and hiding in Tripoli hospitals in the belief he will be safe there.

The Apache helicopters and their pilots, who are part of the Army Air Corps³, are currently on exercise in the Mediterranean⁴.

There had been speculation⁵（猜测） about the move to deploy⁶ them since Monday after France said it would be deploying⁷ French Tiger helicopters and the UK would be sending Apaches.

A Downing Street spokesman said: "Ministers have given clearance⁸ in principle for the deployment⁹ of attack helicopters in Libya. It is a matter now for military commanders to make decisions on deployment."

The final decision rested with David Cameron, who earlier on Thursday had requested more information about possible risks, while he was en route（在途中） to the G8 Summit in France.