传闻在安哥拉内战期间曾发生过化学战,特别是在1986～1990年间。但是迄今为止,没有任何调查能够提供确切的证据。南非化学战防护与裁军问题的技术专家布赖恩·戴维试图根据他所掌握的大量调查资料,找到争取安哥拉彻底独立的全国联盟军在执行任务期间目睹的所谓跨阈步态病人发病的原因;同时还在本文中叙述了他在该地区探寻化学威胁的途径和人们对这种威胁的反应;阐明了在发展中国家可能发生的非常规形式化学威胁的重要观点。 It was rumored that chemical warfare had taken place during the civil war in Angola, especially between 1986 and 1990. However, so far, no survey can provide conclusive evidence. Brian David, a technical expert on South Africa’s chemical warfare protection and disarmament, sought to find out, based on the large body of investigation available to him, the reasons for the so-called cross-striking gait patient’s disease that he witnessed during the mission of the National Coalition Forces fully armed by Angola; In the meantime, he also describes the ways in which he explores chemical threats in the region and the response of people to such threats; he articulates the important point of view of the potential for unconventional chemical threats in developing countries.