历来被西方世界喻为“铁幕”的前苏联，对国内信息外传一贯严格控制，尤其是被定为国家一级机密的境内UFO活动情报，更是三缄其口，滴水不漏。前苏联解体后，接替的俄罗斯政府虽仍承袭其保密传统，然而由于政体更迭，机构解散，造成文件流失，档案曝光，还是使一部分深藏不露的 The former Soviet Union, which has always been dubbed the “iron curtain” in the Western world, has always strictly controlled the domestic information rumor. In particular, it has been classified as a state-level confidential UFO in-country intelligence report. After the disintegration of the former Soviet Union, the successor government of Russia still inherited its tradition of confidentiality, but because of the regime change, the dissolution of institutions, resulting in the loss of documents, the file exposure, or make some hidden