Carlotta Gall in the New York Times:
Shortly after the Sept. 11 attacks, I went to live and report for The New York Times in Afghanistan. I would spend most of the next 12 years there, following the overthrow of the Taliban, feeling the excitement of the freedom and prosperity that was promised in its wake and then watching the gradual dissolution of that hope. A new Constitution and two rounds of elections did not improve the lives of ordinary Afghans; the Taliban regrouped and found increasing numbers of supporters for their guerrilla actions; by 2006, as they mounted an ambitious offensive to retake southern Afghanistan and unleashed more than a hundred suicide bombers, it was clear that a deadly and determined opponent was growing in strength, not losing it. As I toured the bomb sites and battlegrounds of the Taliban resurgence, Afghans kept telling me the same thing: The organizers of the insurgency were in Pakistan, specifically in the western district of Quetta. Police investigators were finding that many of the bombers, too, were coming from Pakistan.
In December 2006, I flew to Quetta, where I met with several Pakistani reporters and a photographer. Together we found families who were grappling with the realization that their sons had blown themselves up in Afghanistan. Some were not even sure whether to believe the news, relayed in anonymous phone calls or secondhand through someone in the community. All of them were scared to say how their sons died and who recruited them, fearing trouble from members of the ISI, Pakistan’s main intelligence service.
More here. And a rebuttal from Peter Bergen at CNN:
Gall makes two astonishing claims in her Times magazine piece.
The first claim: An unnamed Pakistani official told her, based on what he had in turn heard from an unnamed senior U.S. official that “the United States had direct evidence that the ISI chief, Lt. Gen. Ahmed Shuja Pasha, knew of bin Laden's presence in Abbottabad.” ISI is Pakistan's powerful military intelligence agency.
The second claim: “The ISI actually ran a special desk assigned to handle bin Laden. It was operated independently, led by an officer who made his own decisions and did not report to a superior. He handled only one person: bin Laden…the top military bosses knew about it, I was told.”
It is, of course, hard to prove negatives, but having spent around a year reporting intensively on the hunt for al Qaeda's leader for my 2012 book “Manhunt: The Ten-Year Search for bin Laden From 9/11 to Abbottabad,” I am convinced that there is no evidence that anyone in the Pakistani government, military or intelligence agencies knowingly sheltered bin Laden.
How did I arrive at this conclusion?