buffnut453
Captain
IIRC, the UK received approx 25% of its war materiel from Lend Lease. Whilst that's a considerable proportion, its removal would not have resulted in automatically in the UK having to surrender. Lend Lease was a purely pragmatic decision by Roosevelt. By mid-1940, the only democratic nations of substance outside the US were the UK and the English-speaking nations of the Commonwealth. If the UK ceased fighting, America would have been surrounded by expansionist dictatorships with little chance for the US alone to overcome them (launching D-Day from Greenland, anyone?). The probably result (assuming Barbarossa followed a similar path to the way things panned out in reality) would be a Soviet-dominated Europe, or at least a long, bloody fight between the USSR and Nazi Germany, with Japan having effectively a free hand in the mainland battles of the Far East - no Burma Campaign, which was one of the main drains on IJA strength, and little need for the Pearl Harbor attack.