Youssef recalls asking the children about the job of a pilot.

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Well I realize that I am asking for too much as your job is to report about the technology sector yet for some reason I strongly believe that you have the same mindset as many other Americans that oil is in great supply and does no harm to our environment.

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Another possibility is to ask people in the job but about another company, so you are still asking about a situation one step removed from them.

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And our job in the weeks ahead is to ask the difficult questions the public are asking about how this mission ends, about Britain's commitment - all the questions that I fully understand, not least in the light of Iraq, that people will be asking.

BBC: Transcript of Douglas Alexander interview