Analysis: The German terror connection

The Taiba mosque in Hamburg, closed this year, was frequented by some of the 9/11 attackers The deaths of four Germans in a US drone strike on Taliban militants in north-west Pakistan coincide with intelligence warnings of a possible al-Qaeda plot to attack European capitals, including Berlin. By piecing together all the information, a picture emerges of a well-established German terror connection

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What happened to the other people who vanished from Hamburg a year ago is unknown. And if the Americans thought an attack was likely soon, could the people killed in Pakistan have been the perpetrators from that distance?