@ Putin
While I still hold to my belief that the USSR could not have survived without US support, you have made me question the objectivity of western historians, so good job. However, there are a few things I want to point out.
You claim that the fighter planes mentioned previously were not top of the line. Well, thats not our fault. Since the US government wasn't purchasing those models and the USSR was, the USSR was highly involved in the planning and production stages of the aircraft, and many changes were made due to recommendations by Soviet test pilots. The end product was in essence , Soviet designed, American built.
You say that the aid that did come from lend-lease came after it was really needed. This is true, but put it in perspective. The one Soviet port we shipped goods through -Murmansk - was ice bound for part of the year. The USSR wasn't officially cleared for lend lease until November 1941. And above all, by 1943, USA was providing lend-lease with almost $1 billion of goods a month, compared to $600 million in all of 1941, most of which was not war material. It just takes time to re-tool factories, test designs, and ramp up production.
You also claim that the USSR received no guns from the Americans. Again false. "The Russian offensive which drove the Germans out of White Russia and a large part of the Ukraine was aided by thousands of guns, planes, tanks, trucks, and other items provided by us." I am not saying that we produced the majority of Russia's guns - we produced less than 10% - but to say that we produced none is a lie.
Not only that, but "we have also provided machine tools and other equipment to help the Russians manufacture their own planes, guns, shells, and bombs." So, we helped you make your own stuff. Stalin says it best, I believe, "Premier Joseph Stalin, in a toast at a dinner party at the Teheran Conference in ate October 1943, declared, “Without American machines the United Nations never could have won the war.” In addition to machines, we also gave the USSR over 3 million tons of food, something that's kinda significant.
On another note, you were disputing the importance of our victories over Germany in North Africa. Well, in addition to GB losing its major connection with India, if Suez had fallen into German hands, the way would have been open for Germany to push into the Iraqi and Iranian oilfields which fueled *each* of the allies war efforts and was a major supply route to the USSR.
Alright, last thing, sorry to keep this so long. I just want to add that I believe the mayor of Leningrad offered the city's surrender and hitler stubbornly refused and laid siege to it instead, tying down several hundred thousand German troops while letting several hundred thousand Russian troops live to fight another day.
My sources, as I knew you are going to ask, are the encyclopedia britannica, wikipedia (for the P-63, it had a valid scholarly citation though) and mostly from
http://www.historians.org/projects/giroundtable/Lend_Lease/LendLease2.htm
The last one is the website of the american historians association, and the source is primary documents - pamphlets distributed by the US government in 1944, before the USSR was our enemy. the disclaimer says figures may not be current ones.