Could Germany have defeated the Western Allies (USA, UK and Canada) in WW2 had t

Question:

Could Germany have defeated the Western Allies (USA, UK and Canada) in WW2 had they not invaded Soviet Union?

The Soviet Union was a murderers alley for years, either by the Great Purge of Joseph Stalin or even the Napoleon failed campaign in the 1800's. Germany obviously made a mistake invading this country. They could have never won, even if they weren't at war with Britain, USA and Canada. But...what if Germany's full military might was against the USA, Britain and Canada. Keep in mind, in all likelyhood half of all American manpower and weapons were available for the war against the Japanese. With this in mind, is it possible for a German victory in the West against the Western Allies? Yes, the Battle of Britain was a costly loss for Germany but surely if the Germans had the full power of their air force against Allied convoys in the years 1942-43, this may have proved a decisive victory over the Western Allies? Supply problems would have meant Allied defeat no? The British and Americans would have had tremendous difficulty planning their D-Day without the necessary aircraft, tanks, etc?

Best Answer - Chosen by Asker: Hitler's 3 biggest blunders:

1. Ceasing the strategic bombing runs over Britain and going for bombing runs on the larger cities.

2. Declaring war against the US as per pact with Japan.

3. Invading Russia.

If Hitler had not invaded Russia and kept those resources for protecting Germany or used them to get Britian then Hitler could have probably been able to keep Europe. He would not have been able to invade the US and succeed. Not without help. However, if he gained control of Europe and then spent the next 10-15 years building a better army and navy and developing atomic weapons then he might have had a chance later on.