Economic policy set at the whim of one man. Tariffs up one day and down the next. Businesses bewildered, consumers alarmed. As Donald Trump wages his trade war, what will become of a global economy dependent on close trading links? Leading financial journalist Philip Coggan lifts the lid on Trump's economic gamble, why it's a universal threat and how we can make sense of this new 'age of chaos'. This is his clear-sighted and powerful rallying cry in defence of global trade - and why it matters for the world.