• Regionalism emerges as a persistent structuring principle of postwar governance, shaping policy instruments and interaction with the UN through OEEC-type bodies, regional commissions, and Southeast Asian initiatives [9], [14], [4], [10], [1].

• Constitutional design of international order centers on reconciling state sovereignty with collective action, driving reform debates, charter revisions, and legal questions across UN-centric governance [12], [18], [19], [3], [1].

• Economic governance in this era is framed by regional integration, trade regimes, and monetary policy coordination within IOs, evidenced by GATT, OEEC, ECAFE, and IMF-related studies [6], [9], [4], [15], [20], [10].

• Security architecture is analyzed through theories and practices of collective security, NATO jurisdiction, international criminal jurisdiction, and transatlantic alignment [11], [8], [17], [7].