Von Neumann's actual game theory, as developed with Morgenstern, centered on cooperation and stable coalition solutions (e.g., players in a multiplayer game ganging up on the leader), not zero-sum thinking; the zero-sum/prisoner's-dilemma framing of nuclear strategy came from others inspired by him, and the prisoner's dilemma itself is non-zero-sum, so the 'Dr. Strangelove' caricature of him as a cold zero-sum thinker is mistaken.