No way to tweet a friend: Trump’s Mexico tariffs

In the end, President Donald Trump’s tariff threat did what he had hoped: Mexico has pledged to tighten immigration flows. But such weaponisation of tariffs bodes ill for the future. China’s “green Great Wall” of trees—a bid to halt desertification—may be doing more harm than good. And, we meet some of the Filipino sailors who keep the global shipping industry afloat.

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