"Remember, I am a tariff man," declared US President Donald Trump in December, in a dark warning of what he would do if he didn't get a satisfactory trade deal with China.
It turned out that he didn't. So last month, he ratcheted up the already existing tariffs on Chinese imports and threatened to extend them to everything that China sells to the United States. He also threatened to raise tariffs on car imports from Japan and the European Union. He has already slapped tariffs on steel and aluminium imports from several countries.