The new system will send the airlines additional names of passengers not on either the no-fly or selectee list but identified as possible security risks because of intelligence about threats.
Because of intelligence about the collaboration among the Khorasan group, al-Qaida's Yemeni bomb-makers and western extremists, the transportation security administration decided last July to ban uncharged mobile phones and laptops from flights to the US from Europe and the Middle East.
The U.S. Embassy closed before the bombings because of intelligence about potential attacks.
The Obama administration and other governments have said little in public about the chemical weapons movements, in part because of concern about compromising sources of intelligence about the activities of Mr. Assad's forces.
Officials gave conflicting accounts of his significance: one portrayed him as a "senior operational commander" while another played down his role, saying that his capture was instead important because he had provided large amounts of intelligence about the groups and ties between them.
Although it was an embarrassment for the US that neither bin laden or Zawahiri had been caught, Cannistraro said, there is a lot of intelligence about Zawahiri, mainly because he is more publicity hungry than bin Laden.
Yet, experts say, he could possess a wealth of intelligence about the origins of terrorist conspiracies, at least in part because Khalid Shaikh Mohammed, the proclaimed mastermind of the Sept. 11 plot, is Mr. Yousef's uncle.
Because the facts had now been settled, the agency notified James R. Clapper, the director of national intelligence, about 5 p.m. on the following Tuesday — Election Day.
A spokesman for the French government reiterated today that the raids were carried out because of intelligence information about the group's "dangerous and illegal" activities.
Raves, meanwhile, were also a target for the police, who waged a war on grime as the decade wore on, regularly shutting down club nights because of "intelligence reports" about possible violence.
The report, by the General Accounting Office, was issued as British Airways acknowledged that it had canceled a London-to-Washington flight for the fifth time this year, because of intelligence information about possible terrorist threats.
