As the US I can gladly accept the fact that I'm fighting my opponents to the bitter end with no chance to stop the war until Allied troops are in Berlin and Tokyo.
As the Japanese or even the Germans, its ridiculous to think that the only way I'm ever going to win World War II after the US enters the war is to launch a naval invasion of the continental United States and conquer Washington DC, New York City, and Los Angelos!
The Axis never had the capability to invade the US. The whole strategy to dealing with the US was to isolate the other weaker Allied nations and defeat them, and cut the US off and end the war in a stalemate.
Germany wanted Europe and North Africa. Japan wanted the US Pacific Fleet out of its neighborhood.
There has to be some way as the Axis or even as the Allies to end the war if it turns into a stalemate.
O for pete's sake. And then? Then what? When you've taken europe and fortified the western wall. You're just going to perfect your socialist paradise? The game will change into Hearts of Theme park?
Take the frigging world, it's what the game is about. Or quit before you take the US. Anyway, there's still a peace button, just no negotiation about the provinces. I guess that after harassing their convoys and cities you'll be able to get the peace at the status quo.