N2KL is the designation used by the United States and Coalition Forces for an area in Regional Command East comprising four provinces of Afghanistan; Nangarhar, Nuristan, Kunar, and Laghman. These provinces border Pakistan, a fact important in the infiltration of Afghanistan from Pakistan and of Pakistan from Afghanistan and smuggling of weapons, narcotics, lumber, copper, gemstones, marble, vehicles, and electronic products, as well as ordinary consumer goods. Furthermore, the area is of strategic significance due to its natural resources, including water, agriculture, timber, and gems.
- Amber Robinson (9 June 2009). "Soldiers disrupt timber smuggling in Afghan province". Retrieved 14 February 2013.
- Abdul Sami Paracha (28 June 2002). "Timber smuggling from Afghanistan on the rise". Dawn. Retrieved 14 February 2013.
- "Six Pakistanis held in Afghanistan on timber smuggling charge". Dawn. 19 September 2005. Retrieved 14 February 2013.
- "Pakistan suggests curbs to end smuggling from Afghanistan". 30 November 2009. Retrieved 14 February 2013.
- Defense.gov News Transcript: DoD News Briefing With Colonel John Spiszer, Via Teleconference From Afghanistan, at the Pentagon Briefing Room, Arlington, Va
- David Tate (1 September 2007). "Afghanistan: The jihad within a jihad". The Long War Journal. Retrieved 14 February 2013.