6 October, 1984 Honored Sir: Pursuant to our well known policy of exchanging scientific information with the Governments of friendly Powers, my Government takes the greatest pleasure in announcing a scientific discovery of inestimable value to the entire world. I refer to nothing less than a positive technique for liquidating rats as a species. This technique involves treatment of male rats with certain types of hard radiations, which not only renders them reproductively sterile but leaves the rodents so treated in full possession of all other sexual functions and impulses. Furthermore, this condition of sterility is venereally contagious, so that one male rat so treated will sterilize all female rats with which it comes in contact, and these, in turn, will sterilize all male rats coming in contact with them. Our mathematicians estimate that under even moderately favorable circumstances, the entire rat population of the world could be sterilized from one male rat in approximately two hundred years. Rats so treated have already been liberated in the granaries at Odessa; in three months, rat-trappings there have fallen by 26.4 percent, and grain-losses to rats by 32.09 percent. We are shipping you six dozen sterilized male rats, which you can use for sterilization stock, and, by so augmenting their numbers, may duplicate our own successes. Curiously enough, this effect of venereally contagious sterility was discovered quite accidentally, in connection with the use of hard radiations for human sterilization (criminals, mental defectives, etc.). Knowing the disastrous possible effects of an epidemic of contagious human sterility, all persons so sterilized were liquidated as soon as the contagious nature of their sterility had been discovered, with the exception of a dozen or so convicts, who had been released before this discovery was made. It is believed that at least some of them have made their way over the border and into the territory of the United Peoples' Republics of East Asia. I must caution your Government to be on the lookout of them. Among a people still practicing ancestor-worship, an epidemic of sterility would be a disaster indeed. My Government must insist that your Government take some definite step toward the solution of the Khakum River question; the present position of the Government of the United Peoples' Republics of East Asia on this subject is utterly unacceptable to the Government of the Union of East European Soviet Republics, and