The Allies probably would have eventually won World War II even had the Nazis conquered Stalingrad, redistributed their spearhead forces as mobile reserves, repelled the Red Army’s subsequent winter 1942 offensive, and seized the Caucasus oil fields, thus depriving the Red Army of 90% of its motor fuel. But any Allied victory would have required the large-scale use of nuclear weapons, and a death toll in Europe that would most likely have been twice the actual World War II death toll of perhaps 40 million.
也许即使纳粹占领了斯大林格勒，将其先头部队调拨为机动储备军，击退随后的1942年冬季红军反击攻势，夺取高加索油田从而剥夺红军90%的汽车燃料，盟军最终也能赢得第二次世界大战。但盟军的胜利必将大规模使用核武器，欧洲死亡人数极有可能达到第二次世界大战实际死亡人数（可能超过4000万）的两倍。