Book excerpt: Pakistan's northwest frontier has become a breeding ground for a growing Islamic militancy that threatens the stability of the country. Instability in Pakistan's federally administered tribal areas and North-West frontier province also threatens NATO's strategic Khyber Pass lifeline to Afghanistan, where 37,000 U.S. troops are attempting to contain an expanding Taliban insurgency. Pakistan's Troubled Frontier offers a gripping snapshot of the militants and movements threatening a region plunging into turmoil. Arriving at a time when the United States is dramatically increasing its presence in Afghanistan and conducting a careful review of its policies and goals in the border region, the book is a substantial contribution to understanding the long-term future of U.S. security interests in South and Central Asia. "An essential source for anyone trying to understand what is happening in every single region of the tribal belt, who the main players are, their links to al-Qaeda and the Taliban and what their future aims may be. A brilliant and impressive addition to a subject of which little is known."--Ahmed Rashid, author of Descent into Chaos: The United States and the Failure of Nation Building in Pakistan, Afghanistan, and Central Asia "A timely guide for the policymaker, the scholar, and the journalist... unequaled in its range and comprehensiveness."--Stephen P. Cohen, author of The Idea of Pakistan