An emerging threat is "non-governmental, non-conventional, dynamic or random, non-linear, with no rules of engagement or predictable doctrine." 
Although a conventional threat lends "itself to conventional intelligence collection capabilities that [include] a strong reliance on stand-off technical collection capabilities and methodical analysis, ... emerging threats cannot be easily seen, assessed, and fixed by existing technical intelligence collection capabilities." 
- Bush doctrine
- conflicts short of war
- homeland security
- intelligence community
- Iraq as an imminent threat
- national security
- revolution in military affairs
- "Intelligence Challenges In The 1990's," CSC 1993. Subject Area: Intelligence.
- Fred Fuller and G.I. Wilson, "Emerging, Devolving Threat of Terrorism," ENN Daily Report, November 30, 1996 (Vol. 2, No. 335).
- Jonathan B. Tucker, Ph.D., "Asymmetric Warfare: An Emerging Threat to U.S. Security," The Project on Defense Alternatives, The Commonwealth Institute, May 1997.
- Richard Butler, "The Emerging Threat of Iraq and the Crisis of Global Security," Jerusalem Center for Public Affairs, Jerusalem Letter No. 437, 1 Elul 5760/September 1, 2000.