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The forces are intended to fulfil combat missions and therefore even the deployment of WMD can't prevent the units from accomplishing combat tasks. They can't stop fighting and leave contaminated areas. The article deals with collective protection of persons in combat vehicles and mobile logistic means of ground forces against effects of chemical, biological and radioactive warfare agents. Optimal solution of vehicle air supply regulation is continuous measuring of CO2 level in the protected space air and simultaneously optimalization of overpressure in vehicle. Needless overpressure eventuates in higher filtered air supply, which shorten service lifetime of collective filter. Newly ratified Czech State Norm ČOS 414001 contains new standardization requirements. For specific situations, this standard allows in the air supplied to the vehicle interior certain levels of CO2 volume. Maximum value of 2,5 % ± 0,5 % is acceptable only for emergency situations, when crew survival concerns. The article describes NBC filter FVZ98M, i.e. filtration and ventilation device, intended for combat vehicle crew protection. Correctness of the principles was proved true by computer simulations.

Political extremists as an anti-system opposition present an impending threat to democracy. They use both legal and illegal methods of fight against society. In our country, all wings of extremist movement are present, even though the Czech Home Office suspended the activities of hard left and right organizations. The author holds wider concept of extremism. He classes among extremists also the so-called darkers and phakers and ani-globalist street parties, in which strange personages with anarchy background took part in. With them, there are subsequent forms of sub-culture tied: squatting, darking, hooligans, and graffiti. Among others, the author puts the stress on prevention. Anti-extremist policy must be complex: regulations and remedies are overlapping. The antiextremist precautions are accepted not only by state institutions primarily concentrated on inner security, but also within the bodies such as Ministry of Defence, Security and Information Agency, Military Intelligence and Counter-Intelligence, Office for Foreign Relations and Information, various educational, youth and cultural organizations.

The purpose of this article is to point out the problems of long long-lasting stay in different culture surroundings, countries being at war or undergoing post-war reconstruction. It is the question of the so-called multiculturalism, in which an observer must adapt himself to quite a different culture, or to say it better, to affiliate his life with the knowledge and values shared by another society. This empirical survey, together with collected data, is the first of its kind that was carried out in the Czech Republic. The research was done with the use of questionnaires. Even though the poll was taken among the patch of 95 respondents, its results may be extrapolated over other persons, war correspondents, humanitarian workers, diplomats, or members of church missions.

The author, the former chief military chaplain, nowadays an advisor to the Czech defence minister, summarizes all relevant views on global responses to terrorism. The deadly attacks against Word Trade Center were more than acts of terror, they were acts of war. International law makes it possible to hunt the perpetrators, organizers and instigators of terrorism wherever they are. Immediately after the 11 September attacks on the United States, the Security Council expressed its determination to combat, by all means, threats to international peace and security caused by terrorist acts. The Council reaffirmed the inherent right of individual or collective self-defence in accordance with the Charter of United Nations. The States concerned have set their current military action in Afghanistan in that context. Col. Holub quotes individual views on war expressed by leaders of the U.S., NATO, United Nations, international law specialists, high Catholic clergy, ideas of Bishop Conference, and those of religious groupings. He doesn't come to any conclusion; he only wants to initiate a wide-ranging ethic discussion, as the traditional concept of the "just war" doesn't fit to this new situation. In his opinion, the core of problem lies in justifiability or unjustifiability of preventive war.