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.