Schmid's academic consensus
definition of terrorism was first published in 1988 in the revised edition of
Political Terrorism (Schmid and Jongman): "Terrorism is an anxiety-inspiring method of repeated violent action, employed by (semi-) clandestine individual, group or state actors, for idiosyncratic, criminal or political reasons, whereby – in contrast to assassination – the direct targets of violence are not the main targets. The immediate human victims of violence are generally chosen randomly (targets of opportunity) or selectively (representative or symbolic targets) from a target population, and serve as message generators. Threat- and violence-based communication processes between terrorist (organization), (imperilled) victims, and main targets are used to manipulate the main target (audience(s)), turning it into a target of terror, a target of demands, or a target of attention, depending on whether intimidation, coercion, or propaganda is primarily sought". He proposed a definition to the UN
Commission on Crime Prevention and Criminal Justice (CCPCJ) in 1992, based on the already internationally accepted definition of
war crimes, with the crucial words "peacetime equivalents of war crimes", but his proposal was not accepted. The 1988 definition was updated in 2011 after "three rounds of consultations among academics and other professionals" and published in
The Routledge Handbook of Terrorism Research. The revised definition is longer than most, after suggesting that the previous attempts, in its quest for consensus, had reduced the level of complexity in the definition, and ended up with "a high level of abstraction". The 2011 revised definition includes 12 points, the first of which is: == Recognition ==