"The killers were unbelievably careless," said Mustafa Alani, a security analyst at the Gulf Research Center in Dubai.

“杀手的粗心大意让人难以置信”迪拜海湾调查中心安全调查员Mustafa Alani说。

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A laughing gull, covered in oil from BP's Gulf of Mexico oil spill, sits in a cage at the International Bird Rescue Research Center in Buras, Louisiana, June 6, 2010.

阿笑鸥，涵盖从BP石油的墨西哥海湾的石油泄漏，坐落于国际鸟类救援研究中心伯拉斯，路易斯安那州，2010年6月6日在笼子里。

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People wash a brown pelican which was covered in oil from BP's Gulf of Mexico oil spill, at the International Bird Rescue Research Center in Buras, Louisiana, June 6, 2010.

人们洗一褐色鹈鹕是涵盖BP的墨西哥海湾的石油泄漏，石油在国际鸟类救援研究中心伯拉斯，路易斯安那州，2010年6月6日。

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"They were able to get their man on an American plane on an American soil so it is successful by all means, " said Mustafa Al-Ani at the Gulf Research Center.

CNN: Report: New bin Laden tape emerges