The prime suspect Bin Laden has the global networks and agents sponsored by Bin Laden's Al Qaeda organization. The USA asked Pakistan to track and close off of the organization's financial assets and supply lines and tighten the illegal flow of fuel and other supplies over the mountainous border. Little by little,the USA is carrying the strategy into its action.
Nobody knows except the executive in the military or air force.
We should be careful about the news. However,one big difference is that we don't know clearly who is the opponent in this terrorism in New York and Washington even if Bin Laden is the prime suspect. The opponents could be few terrorists groups or some countries which back up them. The USA would be big target for the terrorists because this country's power is so enormous and affect the world in every fields such as economy,politics,society,etc. Therefore,some people or countries don't want to follow the USA.This antipathy against the USA produce the terrorists groups.