"9/11 plotter released in Syria prisoner exchange" SNIPPET: "The al-Qaeda recruiter reputed to have assembled the so-called Hamburg Cell, which planned and largely carried out the 9/11 attacks on New York and Washington, has been set free in a prisoner exchange between rebel and regime forces in Syria. Islamist rebel group Ahrar al-Sham has secured the release of 9/11 plotter and alleged al-Qaeda core member Mohammed Haydar Zammar, adding to concerns about the composition of the Islamic Front. A naturalized German citizen of Syrian origin, Mohammed Haydar Zammar left Germany shortly after the attacks and traveled to Morocco, where he was reportedly...