Al-Qaida linchpin eludes his pursuers Rory McCarthy in Karachi Monday September 23, 2002 The Guardian When Pakistani police dragged the blindfolded al-Qaida suspect Ramzi Binalshibh out of a bullet-ridden apartment block in Karachi and past the waiting cameras the arrest was hailed as a crucial breakthrough in the fight against Osama bin Laden's network. But the Guardian has learned that the target of the raid, a much more senior al-Qaida figure who agents had been tracking for several days, slipped away from the drab concrete building hours before. Khalid Sheikh Mohammad, the Kuwaiti who heads Bin Laden's military command and...