How Trump turned global trade into an economic battlefield

President Donald Trump’s dizzying tariffs rhetoric has caught the economy flat footed.

While Trump has long lauded trade duties as a solution to a host of economic woes, it has been the tariffs’ erratic roll-out — and shifting rationales — that has alarmed investors.

Below is a play-by-play of how Trump’s trade rhetoric — and responding measures by the nations he has targeted — has played out.