The Strategic Bombing Survey’s conclusions highlight another important factor in the decision to employ the bombs against Japan: the message such a display would send to Josef Stalin. Uneasy allies in the war against Germany, Russian forces joined the war in Japan in August 1945. Contemporary observers noted that the demonstration of the deadly new weapon’s considerable might had the additional effect of warning Stalin that the . would exercise considerable power in the postwar period. Furthermore, dropping two bombs only days apart had the added benefit of convincing the Russians that the . possessed a formidable supply of the new weapons; when in fact, the . nuclear arsenal was entirely depleted after the two attacks on Japan.