Starling,
We now know quite a bit more about Pakistans operations and intentions in Karachi and Kabul:
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– Pakistanis Aided Attack in Kabul, U.S. Officials Say –

WASHINGTON — American intelligence agencies have concluded that members of Pakistan’s powerful spy service helped plan the deadly July 7 bombing of India’s embassy in Kabul, Afghanistan, according to United States government officials.

The conclusion was based on intercepted communications between Pakistani intelligence officers and militants who carried out the attack, the officials said, providing the clearest evidence to date that Pakistani intelligence officers are actively undermining American efforts to combat militants in the region.

The American officials also said there was new information showing that members of the Pakistani intelligence service were increasingly providing militants with details about the American campaign against them, in some cases allowing militants to avoid American missile strikes in Pakistan’s tribal areas.
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American officials said that the communications were intercepted before the July 7 bombing, and that the C.I.A. emissary, Stephen R. Kappes, the agency’s deputy director, had been ordered to Islamabad, Pakistan’s capital, even before the attack. The intercepts were not detailed enough to warn of any specific attack.

The government officials were guarded in describing the new evidence and would not say specifically what kind of assistance the ISI officers provided to the militants. They said that the ISI officers had not been renegades, indicating that their actions might have been authorized by superiors.

“It confirmed some suspicions that I think were widely held,” one State Department official with knowledge of Afghanistan issues said of the intercepted communications. “It was sort of this ‘aha’ moment. There was a sense that there was finally direct proof.”