President Trump has announced an enormous increase in US tariffs on the rest of the world. But is this a negotiating tactic that will see tariffs fall over time, or a permanent feature of the new global trading system? And given that most investors’ worst case tariff scenario has transpired, what other major shocks could these moves catalyse? Paul Diggle and Luke Bartholomew discuss the design of the reciprocal tariff regime, the possible economic impact on the US, and how things might get better – or worse.