cover facilities which have been declared by the State parties. However, prohibited activities might occur at facilities which have not been declared or were declared, but not as subject to international monitoring. To assure full compliance with the projected convention, additional verification methods are discussed. In case of serious suspicion or allegation of a breach of the chemical weapons convention, challenge inspection might be applied. In principle, challenge inspection can be applied to both military and civilian facilities. To learn the practical problems of this type of inspection, many States participating in the Conference on Disarmament have made trial challenge inspections at both civilian and military facilities. Challenge inspection has both political and technical aspects. Czechoslovakia believes that challenge principles on the base of its obligatory character, without right of refusal, any time, anywhere and at short notice, are in agreement with its previous statements. The technical aspects of challenge might be solved on a practical level by evaluation of real experiences from national CD/PV.570 25 (Mr, Kralik, Czech and Slovak Federal Republic) experimental challenge inspections. Czechoslovakia agrees with the proposal of the United Kingdom to conduct national challenge inspections by a number of countries participating in the Conference on Disarmament, as was suggested in United Kingdom documents CD/921 and CD/1012. This challenge inspection - now inspection on request - was conducted in the Czech and Slovak Federal Republic at the beginning of July. I am now submitting to this disarmament Conference two documents, CD/1021 and CD/1022. One of these is concerned with the inspection of a military facility and the second is concerned with the inspection of a civilian chemical plant. Our experiences, which are summarized in the conclusions of both documents, could be of some importance for further negotiations in this field. However, a very 
**Analysis**
The text discusses the verification methods and procedures for the Chemical Weapons Convention, including challenge inspections, and shares the experience of the Czech and Slovak Federal Republic in conducting such inspections. The focus is on the technical and political aspects of these inspections, and the documents submitted to the Conference on Disarmament provide specific examples of military and civilian facilities inspected.

**Category**
Science and technology, International relations