The Nazis never wanted a war on two fronts, as such. They wanted to be able to take the Eastern territories unhindered, without having to oppose Western Europe. So, when France and the UK declared war, they had to attempt to beat them into submission (which they almost succeeded in) before they could successfully open up an Eastern Front. If Germany had won the Battle of Britain, this goal would have been achieved, and it would have been much easier for Germany to defeat the Soviets. So it wasn't a matter of wasting time attempting to win- it was essential. It was just that they really needed to win.
And time. Perhaps if they had waited until the following year (so as to not get stuck by winter), concentrating on reinforcing what they had in the West (without wasting precious aircraft and manpower), and not declaring war on America, then they would have had a much better chance of defeating Russia.
And time. Perhaps if they had waited until the following year (so as to not get stuck by winter), concentrating on reinforcing what they had in the West (without wasting precious aircraft and manpower), and not declaring war on America, then they would have had a much better chance of defeating Russia.
