To calculate its ‘reciprocal tariffs’, the Trump administration has opted for a crude formula with no basis in trade theory.

U.S. trade, raising export costs, threatening tech growth, inflation, and prompting urgent economic strategy shifts.

Globe economics reporter Mark Rendell says Wednesday’s tariff announcement by President Donald Trump saw Canada not hit as hard as predicted, but that the trade war has now gone global.

An international symposium with the theme “Strengthening the role of the United Nations and promoting multilateralism,” based ...