Donald Trump’s return to the White House on Monday has the world economy on tenterhooks. Could the 47th US president govern broadly as he did last time, when his most extreme threats were ultimately softened? Or is this time different? Corporate America’s biggest beasts have cosied up to the president-elect, but there are also serious jitters on Wall Street, amid investor fears that Trump’s most colourful campaign rhetoric will soon become a reality: risking a fresh inflation shock in the world’s largest economy. Rising prices would in turn devalue the money received for owning US government bonds, leading the markets