Does power transition theory reflect the dynamics of US-China relations ?

The theory. A. F. K. Organski's World Politics (1958), developed with Kugler in The War Ledger (1980), argues that war is likeliest not under imbalance but when a dissatisfied challenger approaches parity with the dominant state. Two variables matter: relative power trajectory, and satisfaction with the existing order. A satisfied riser transitions peacefully, as Britain did with the United States. Graham Allison's Thucydides Trap restates this popularly, finding war in twelve of sixteen historical cases.

Where it fits.

• The trajectory is textbook: China's share of world output rose steeply from 1979, and it is now the dominant trading partner of most of the world.
• Dissatisfaction is visible in revisionist behaviour on the terms rather than the existence of the order — the Belt and Road Initiative, the Asian Infrastructure Investment Bank, the New Development Bank, insistence on quota reform at the IMF, and the rejection of the 2016 South China Sea arbitration.
• The American response matches the theory: tariffs, export controls on advanced semiconductors, and alliance tightening through AUKUS and the Quad.

Where it fits badly.

• Nuclear weapons make general war between the two irrational in a way none of Organski's cases faced.
• Economic interdependence is unprecedented; the challenger and the incumbent are each other's major trading partners, so decoupling is costly rather than free.
• Partial satisfaction. China is a permanent member of the Security Council and the largest beneficiary of the WTO trading order; it seeks a larger share within the order more than its replacement.
• Power is multidimensional. China leads in manufacturing and increasingly in some technologies, but the dollar, alliance networks and force projection remain American.

Assessment. The theory captures the mechanism of the rivalry and correctly identifies the danger period, but treats war as far more probable than the nuclear and economic structure warrants. The likelier outcome is prolonged, managed competition punctuated by crises over Taiwan.