The bulk of the Islamic State of Khorasan is thought to be in Pakistan, but the group is trying to make inroads into Afghanistan. That said, the group's actual ability to operate in Afghanistan appears rather limited.
May 4, 2015
Pakistan, the world’s second-largest Muslim nation, borders Afghanistan, Iran, India, and China and is a key player in Middle East and Asian relations due to its geography and complex history. RAND research has explored the forces shaping the development of Pakistan’s economic and political systems, its nuclear imperative, the role of local Islamic fundamentalist groups in global terrorism, and the effect of U.S. military policy and foreign aid to Pakistan on regional counterterrorism efforts.