The past three months have been more exciting for the global economy than the past three decades, thanks to Donald Trump and his most potent tool to settle scores: tariffs. If the tariffs' impact lasts longer than many would want, it could turn global trade upside down, ending the free trade era as we have known it for a couple of generations. India, set to face Trump's reciprocal tariffs from today, though, seems to be pretty cool about it.