Sebastian Rotella reports:

A confessed Pakistani American terrorist took the stand in a Chicago courtroom Monday and described a close alliance between Pakistan’s intelligence service and the Lashkar-i-Taiba terrorist group, alleging that Pakistani officers recruited him and played a central role in planning the 2008 Mumbai attacks.

David Coleman Headley’s long-awaited testimony at the start of a trial with international repercussions resolved one question at the outset: Federal prosecutors did not hesitate to connect Pakistan’s Inter-Services Intelligence Directorate (ISI) to the attacks that killed 166 people, including six Americans.

Headley has pleaded guilty to doing reconnaissance in Mumbai and is the star government witness against his alleged accomplice, Tahawwur Rana. Headley testified that Lashkar “operated under the umbrella of the ISI” even after the group was banned in Pakistan in 2001.

The ISI and Lashkar “coordinated with each other,” Headley testified. “And ISI provided assistance to Lashkar: financial, military and moral support.”

After he trained three years with Lashkar, Headley said, a “Major Ali” of the ISI recruited him when he was briefly detained near the Afghanistan border in 2006. Ali referred him to an officer known as Major Iqbal, who became Headley’s handler and worked separately but in coordination with Lashkar chiefs, directing Headley’s reconnaissance in India and providing $25,000 to fund his mission.