A Proffessors view.

http://www.freerepublic.com/focus/f-news/1385548/posts

“In the first 1.5 years the Soviet Union was fighting for survival and would have won without lend lease, but further victories and movement to Europe would be questionable,” he reported.

There were 20 million homeless, and 25 million dead, four tenth of agriculture was lost and half of the industrial production was destroyed. “If there were no lend lease the losses could have been much heavier, the war would have lasted longer and the victory was not so complete”, Tuyll concluded.