The catastrophic violence in Gaza has unfolded within an international system that was never designed to restrain the geopolitical ambitions of powerful states. Understanding why the United Nations has proved so limited in responding to what many regard as a genocidal assault requires returning to the foundations of the post–World War II order and examining how its structure has long enabled impunity rather than accountability.

After World War II, the architecture for a new international order based on respect for the UN Charter and international law was agreed upon as the normative foundation of a peaceful future. Above all, it was intended to prevent a third world war. These commitments emerged from the carnage of global conflict, the debasement of human dignity through the Nazi Holocaust, and public anxieties about nuclear weaponry.

Yet, the political imperative to accommodate the victorious states compromised these arrangements from the outset. Tensions over priorities for world order were papered over by granting the Security Council exclusive decisional authority and further limiting UN autonomy. Five states were made permanent members, each with veto power: the United States, the Soviet Union, France, the United Kingdom, and China.

In practice, this left global security largely in the hands of these states, preserving their dominance. It meant removing the strategic interests of geopolitical actors from any obligatory respect for legal constraints, with a corresponding weakening of UN capability. The Soviet Union had some justification for defending itself against a West-dominated voting majority, yet it too used the veto pragmatically and displayed a dismissive approach to international law and human rights, as did the three liberal democracies.

In 1945, these governments were understood as simply retaining the traditional freedoms of manoeuvre exercised by the so-called Great Powers. The UK and France, leading NATO members in a Euro-American alliance, interpreted the future through the lens of an emerging rivalry with the Soviet Union. China, meanwhile, was preoccupied with a civil war that continued until........

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