The classical definitions for terrorism are related to its characteristics of disorder and insecurity, and are inappropriate for “post-9/11” thinking. The current situation is caused by the chaos of a changing world, which has created modern types of terrorism. But the “new” terrorist dynamic must be considered as a continuation of the “old”, and also as the “continuation of politics by other means”, to use the words of Carl von Clausewitz. Certain new elements and new directions have added to the effectiveness of modern terrorism, including the latest media means; the “new” terrorism and the media share a symbiotic relationship. This form of terrorism is itself a media-psychological weapon, which damages the communicative sphere and creates massive threats to the wider society.