This again proves that the attack was aided by Pakistan's infamous intelligence agency, ISI. "It's very difficult to imagine he (Gen Kayani) was not aware," a senior American official told the New York Times. The officials were quoted as saying the attack was masterminded by Pakistan's intelligence agency ISI, that was headed by Kayani before his promotion to the post of army chief.
American intelligence agencies were quoted as saying that senior Pakistani national security officials favour the use of militant groups to preserve Pakistan's influence in the region, as a hedge against India and Afghanistan. In fact, some analysts believe that ISI operatives did not mind when their role in the July bombing in Kabul became known, the paper added.
"They didn't cover their tracks very well," a senior Defense Department official told the paper, "and I think the embassy bombing was the ISI drawing a line in the sand." The newspaper said it was the clearest evidence to date that Pakistani intelligence officers were actively undermining US efforts to combat militants in the region.