A German newspaper will later note, “For much of the 1990s, the Spanish ran an impressive operation against a Madrid al-Qaeda cell, led by Barakat Yarkas, also known as Abu Dahdah. Wiretaps on Yarkas’s phone had revealed that he was in regular contact with [Mohammed Haydar] Zammar and [Mamoun] Darkazanli.” Spanish intelligence began monitoring Yarkas’ cell in 1997, if not earlier (see 1995 and After). It shares this information with the CIA, but not with German intelligence. The CIA also fails to share the information with Germany. A top German intelligence official will later complain, “We simply don’t understand why they didn’t give it to us.” [Stern, 8/13/2003] Spanish intelligence monitors dozens of telephone calls between Darkazanli in Hamburg and suspected al-Qaeda operatives in Spain starting at least by August 1998. On at least four occasions, Darkazanli is monitored as he travels to Spain and visits Yarkas and Mohammed Galeb Kalaje Zouaydi (who will be arrested in Spain in 2002 on charges of being a key al-Qaeda financier (see April 23, 2002)). [Chicago Tribune, 10/19/2003] For instance, at the end of January 2000, Darkazanli is monitored by Spanish intelligence as he meets with Yarkas and some other some suspected al-Qaeda figures. Because the CIA and Spanish intelligence fail to share any of this surveillance information with German intelligence, the Germans are unable to see clear links between Hamburg al-Qaeda operatives and the rest of the al-Qaeda network in Europe. [Chicago Tribune, 11/17/2002] The Spanish will continue to monitor Yarkas and those he communicates with until 9/11, and in fact, in late August 2001 one of his associates will apparently make an oblique reference to the 9/11 attacks (see August 27, 2001).