nature. As you know, this is but the latest of a series of such disappearances, beginning about five years ago, when the Khakum River question first arose. Your utmost activity in this matter is required. Dzhoubinsky Ambassador Krylenkoff to Foreign Minister Dzhoubinsky: 9 March, 1984 Comrade Foreign Minister: Since receipt of yours of 3/3/'84, I have been utilizing all resources at my disposal in the matter of the noted scientist D. O. Voronoff, and availing myself of all sources of information, e.g., spies, secret agents, disaffected elements of the local population, and including two UPREA Cabinet Ministers on my payroll. I regret to report that results of this investigation have been entirely negative. No one here appears to know anything of the whereabouts of Dr. Voronoff. At the same time, there is considerable concern in UPREA Government circles over the disappearances of certain prominent East Asian scientists, e.g.. Dr. Hong Foo, the nuclear physicist; Dr. Hin Yang-Woo, the great theoretical mathematician; Dr. Mong Shing, the electronics expert. I am informed that UPREA Government sources are attributing these disappearances to us. I can only say that I am sincerely sorry that this is not the case. Krylenkoff Wu Fung Tung to Vladmir N. Dzhoubinsky: 21 April, 1984 Estimable Sir: In accordance with our established policy of free exchange with friendly Powers of scientific information, permit me to inform your Government that a new mutated disease-virus has been developed in our biological laboratories, causing a highly contagious disease similar in symptoms to bubonic plague, but responding to none of the treatments for this latter disease. This new virus strain was accidentally produced in the course of some experiments with radioactivity. In spite of the greatest care, it is feared that this virus has spread beyond the laboratory in which it was developed.