ProPublica on ISI-LeT ties

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Pakistan's powerful intelligence service has been accused for years of playing a "double game:" acting as a front-line U.S. ally in the fight against terror while supporting selected terrorist groups which serve Pakistani interests.

Now, for the first time, there is a detailed inside account of how that game is played. The U.S. investigation of the 2008 Mumbai attacks [1] has built a strong case that officers in Pakistan's Inter-Services Intelligence Directorate (ISI) collaborated with the Lashkar-e-Taiba terrorist group in the plot that killed 166 people, six of them Americans. U.S. and Indian investigators say their understanding of the ISI-Lashkar alliance is drawn from the confessions of David Coleman Headley, an American convicted of participating in the Mumbai plot, as well as documents, phone records and electronic eavesdropping.