Measures meant to rebalance America’s economy are wielded instead against the likes of Canada, India and Brazil ‘to compel loyalty to the president’

On the campaign trail, Donald Trump pledged to use tariffs to revitalise American industry, bringing jobs home and helping to make America great again. But more than six months into his administration, experts say the president’s trade war is increasingly being wielded as a political cudgel, in lieu of more traditional forms of diplomacy.

The president’s current target, India, has been unable to reach a trade agreement, and Trump appears ready to follow through with his threat to impose a further 25% tariff on Delhi – bringing the total to 50% – the joint highest levy on any country, along with Brazil.