“The Quad” is a term for quadrilateral (i.e., four-nation) cooperation among the U.S., Japan, India, and Australian — who are joined by other European and Asian democracies — in opposition to China’s aggression and territorial ambitions.
This article explains what game theory predicts about the future of their efforts and China’s actions. It also highlights how Biden’s approach differs from Trump’s bumbling and amateurish foreign policy.