That isn't an endgame.
The endgame for Japan in WWII was to create a defensive perimeter and defeat the US in a few big battles, bringing them to the negotiating table. That went out the window after Midway.
The endgame for Germany in WWII was a defeated Russia, an impotent England, and an accepting United States. That went out the window after the Battle of Moscow and the US entry into the war.
The endgame for Saddam in 1990 was occupying Kuwait and expecting the rest of the world to accept that. That went out the window when the US didn't accept it.
The endgame for the South in the Civil war was a string of victories, European recognition and intervention. That went out the window after Gettysburg.
The Allied endgame for WWII was unconditional surrender of Japan and Germany. What do you know! it worked.
What is the Ukrainian endgame, and by proxy, our endgame?