Maybe...
What if the Nazis sent in the panzers at Dunkirk and wiped out or captured the British Expeditionary Force? That might have been enough to convince the English to negotiate some sort of a peace with Germany... although the Germans might still have tried an invasion - and perhaps they might have succeded, if they were willing to also maintain their pre-defeat of France production of combat air craft and expand it - in OTL they not only failed to increase the production of combat aircraft, they cut back. So, they fight the Battle of Britain against a demoralized England, with more planes available, and no Eastern Front to suck away troops and material. (Since they would've decided to postpone attacking the Soviets - which they could have - books have been written on how Stalin probably wouldn't have tried to back stab Hitler, and how if he had, the Nazis would probably have been able to halt his attack... and held, if they didn't try advancing too far into Russia.)
So, if Hitler sends the panzers in at Dunkirk, maintains and expands the production of combat aircraft and doesn't go after the Soviets, then he might manage to have his German state survive to act as a third super-power in a three way Cold War. Might... I'd have to agree with rewster - they'd also probably have had to not declare war on the US - that or take over England before Japan made the stupid choice to attack the US, which would be pretty hard to do.