Re: ISI
On a more serous not they are the largest, and along with other agencies such as MI they for some unknown reason have a reputation of interfering in matters outside their jurisdiction becuase they can under the pretence of national security. No one really makes sure they are held accountable.
A well known example would be Sheik Omar, the guy who was behind the kidnap and murder of Daniel pearl gave himself into the ISI. They hid him away for a week while the Karachi Special branch where crazily searching the country for him; being prime suspect in the case.