Jundullah is a militant Sunni Islamic group that was founded and operates in Baluchistan. They are known for a strict interpretation of Islam and are known to be behind multiple bombings. What did the U.S. government do about it? Why make them allies in the struggle against the ever perfidious Iran of course. Yes, once again the U.S. government has decided to use radical religious fundamentalists in the pursuit of its policy goals (I haven't listened to that Steve Coll interview, but I am reading the book and it is quite informative for the uninitiated). Jundullah is not the only group to receive aid however, the Mujahideen-e-Khalq and Party for a Free Life in Kurdistan, MEK and PJAK respectively, are also believed to be aided as well. Hersh mentioned that Ahwazi groups might be funded as well, but didn't mention any.