Stock markets react to Trump's latest tariff threats against EU and Mexico

European markets mostly fell Monday as investors digested President Trump's latest trade war salvos, which saw him threaten to hit the European Union and Mexico with 30% tariffs starting on August 1. Mr. Trump's threat came after a series of announcements last week that included warnings of a possible 50% levy on all copper imports and all goods from Brazil, 35% levies on Canadian goods, and a possible 200% tariff on imported pharmaceuticals.

In announcing his latest intentions on Saturday, Mr. Trump cited Mexico's role in illicit drugs flowing into the United States and a trade imbalance with the European Union.

The move threw months of painstaking talks with Brussels into disarray.