The world and America have changed irreversibly under Trump

One hundred days ago, America presided over a world order it had itself crafted. That order was designed to ensure US dominance in a global system that had offered growing prosperity, stability and security for decades. The US economy had rebounded from the ravages of COVID-19 more effectively than any other, even if enough Americans did not yet feel the benefits to save the outgoing administration from electoral defeat. But the US was leading the world’s economy in a tentative recovery. Now all that is in doubt. To his supporters, Donald Trump has used those 100 days wisely. To their…