clipped from: www.thenation.com The concept of the "Long War" is attributed to former CENTCOM Commander Gen. John Abizaid, speaking in 2004. Leading counterinsurgency theorist John Nagl, an Iraq combat veteran and now the head of the Center for a New American Security, writes that "there is a growing realization that the most likely conflicts of the next fifty years will be irregular warfare in an 'Arc of Instability' that encompasses much of the greater Middle East and parts of Africa and Central and South Asia." The Pentagon's official Quadrennial Defense Review (2005) commits the United States to a greater emphasis on fighting terrorism and insurgencies in this "arc of instability." The Center for American Progress repeats the formulation in arguing for a troop escalation and ten-year commitment in Afghanistan, saying that the "infrastructure of jihad" must be destroyed in "the center of an 'arc of instability' through South and Central Asia and the greater Middle East."