Title: The Phenomenon of terrorism, possible dangers for Czech Republic and matters of critical infrastructure as a possible target of terrorist attack. Goal: Main goal of this dissertation is to describe terrorism, todays biggest security threats, in relationship with Czech Republic. To identify the elements of terrorist behaviour during the development of human society from antiquity to present time, to give a sense of historical roots of this topic, his development disposition and also to describe his current status. Methods: The dissertation was based on knowledge gained through study, description, analysis, synthesis and comparison of technical literature and others printed or electronic sources. Results: The dissertation creates compa...