This is a description of what has been going on. It seems it's always about the oil.

Unocal proposed building the Trans-Afghanistan Pipeline to congress in 1998 to provide oil and natural gas to several Asian markets. Regardless of their stated intentions, they had to pull the ruling Taliban away from agreements they had with the Bridas Corp to convince them to sign on with Unocal instead (which eventually got backing from the US government). Enter Iran as the new kid on the block. They offered a pipeline to cross the southern part of Pakistan which would cover less harsh territory and cause far fewer tribal disputes over pumping oil and gas to India and Pakistan. Do you see a potential conflict here?


http://youtu.be/v5-Gz_OG4qY