Why *Should* We Trust The ISI?

I mean, this has been going on for years...

In 2003 or 2004, Pakistani intelligence agents trailed a suspected militant courier to a house in the picturesque hill town of Abbottabad in northern Pakistan.
There, the agents determined that the courier would make contact with one of the world's most wanted men, Abu Faraj al-Libbi, who had succeeded September 11 mastermind Khalid Sheik Muhammad as al Qaeda operations chief a few months earlier.
Agents from Pakistan's powerful and mysterious Inter-Services Intelligence agency, known as the ISI, raided a house but failed to find al-Libbi, a senior Pakistani intelligence official told Reuters this week.
Former Pakistan President Pervez Musharraf later wrote in his memoirs that an interrogation of the courier revealed that al-Libbi used three houses in Abbottabad, which sits some 50 km (30 miles) northeast of Islamabad. The intelligence official said that one of those houses may have been in the same compound where on May 1 U.S. special forces killed al Qaeda leader Osama bin Laden.
It's a good story. But is it true? Pakistan's foreign ministry this week used the earlier operation as evidence of Pakistan's commitment to the fight against terrorism. You see, Islamabad seemed to be pointing out, we were nabbing bad guys seven years ago in the very neighborhood where you got bin Laden.
But U.S. Department of Defense satellite photos show that in 2004 the site where bin Laden was found this week was nothing but an empty field. A U.S. official briefed on the bin Laden operation told Reuters he had heard nothing to indicate there had been an earlier Pakistani raid.
There are other reasons to puzzle. Pakistan's foreign ministry says that Abbottabad, home to several military installations, has been under surveillance since 2003. If that's true, then why didn't the ISI uncover bin Laden, who U.S. officials say has been living with his family and entourage in a well-guarded compound for years?
The answer to that question goes to the heart of the troubled relationship between Pakistan and the United States. Washington has long believed that Islamabad, and especially the ISI, play a double game on terrorism, saying one thing but doing another.

By: Brant