If you are looking for his comprehensive work, it is the book
The subtitle of the book is often overlooked. Rashid was one of the first to connect the Taliban to the "New Great Game"—the scramble for Caspian Sea oil and natural gas. He details negotiations between the Taliban, Unocal (a US oil company), and the governments of Pakistan and Turkmenistan for the Trans-Afghanistan Pipeline (TAP). This section is vital for understanding why the world tolerated the Taliban’s excesses in the 1990s. taliban ahmed rashid pdf
(Nov/Dec 1999), this is arguably Rashid's most famous shorter "piece" on the subject. Combating Terrorism Center at West Point If you are looking for his comprehensive work,