1- WWII was won by Russian manpower which was kept in the fight with massive, massive US aid, US airpower devastating the Luftwaffe and longterm German incompetence. Without the aid, the Russians could not have gone to such an offensive footing.
2- Capturing the Head of State of the US is not as crippling as any other nation at the time.
2- Capturing the Head of State of the US is not as crippling as any other nation at the time.