A European-wide chorus of resistance, led this morning by Keir Starmer, has greeted Donald Trump’s plan to take over Greenland, by force if necessary, and to start a tariff war if any country stands in his way. Have no doubt, this is a moment: if pursued as a non-negotiable demand, Trump’s plan ends any lingering hope that the liberal rules-based order can stumble on through his remaining time in office. The real question now is whether the 2020s will be defined by the complete collapse of the order’s already crumbling pillars and the atrocities accompanying it, or whether an international coalition of the willing can come together to build a new global framework in its place.

For, in quick succession, the US has abandoned its longstanding championing of the rule of law, human rights, democracy and the territorial integrity of nation states. Gone is its erstwhile support for humanitarian aid and environmental stewardship. Gone, too, is the founding principle of the postwar settlement: that countries choose diplomacy and multilateral cooperation over aggression and unilateral action. We cannot doubt any longer that the president meant it when he said he doesn’t “need international law”, and that the only constraint on his exercise of power would be “my own morality, my own mind”.

Indeed, in the past few weeks, every single promise of the US-led Atlantic charter, authored by Franklin D Roosevelt and Winston Churchill, which foreshadowed the United Nations charter and which includes “freedom of the high seas”, free trade and freedom from colonial aggrandisement, has seemingly been cast aside. For Trump, as his political adviser Stephen Miller tells us, the world is to be “governed by strength … by force ...........

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