Abbottabad - How did they do it?

Revelations that American spies monitored Osama bin Laden from a safehouse for months before last Sunday's special forces raid have caused further consternation inside Pakistan, where the military is already fighting angry criticism.

CIA agents sequestered in a rented house conducted extensive surveillance on Bin Laden's hideout using an arsenal of high-tech surveillance equipment including telephoto lenses, eavesdropping equipment and radars to detect possible escape tunnels. (more)