The 9/11 attacks were partly planned in Hamburg by the so-called Hamburg cell. A look back at a day that reshaped Germany's approach to national security.

The 9/11 attacks were partly planned in Hamburg by the so-called Hamburg cell. A look back at a day that reshaped Germany's approach to national security.

The 9/11 attacks were partly planned in Hamburg, via the so-called Hamburg cell, whose members played key roles in the plot. A look back at a day that shook up Germany’s approach…