How World Order Changes

After the Berlin Wall came down in 1989, and almost a year before the Soviet Union collapsed in late 1991, US President George H W Bush proclaimed a ‘new world order’. Now, just two months into Donald Trump’s second presidency, Kaja Kallas, the European Union’s top diplomat, has declared that ‘the international order is undergoing changes of a magnitude not seen since 1945.’ But what is ‘world order’, and how is it maintained or disrupted?