They met again in Kandahar in early 1999 and bin Laden declared that Mohammed’s suicide hijacking plan now had al Qaeda’s backing. Bin Laden wanted to scale back the attack to make it more manageable. He also said he preferred the White House to the Capitol as a target and that he favored hitting the Pentagon. Mohammed pushed for the World Trade Center. His nephew had bombed the towers six years before but had failed to bring them down, and now languished in an American high-security prison; Mohammed sought to finish the job.