Tariff wars: What can the World Trade Organisation do?

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China complains to the World Trade Organisation about Donald Trump's tariffs, but with no active judging panel, what can the WTO do? Roger Hearing discusses why the US Postal Service has U-turned after refusing to handle any parcels from China and Hong Kong, as well as the growing trade war between the World's two leading economies. Elsewhere, the issue of de-banking has been debated in the US Congress, so are financial institutions discriminating against certain groups or industries? And a man from Indonesia has been hired as Japan's first-ever foreign bus driver. Does this show the Japanese government's new determination to let in more overseas workers. The latest business and finance news from around the world, on the BBC.