Trump Threatens EU, Smartphones as Tariff Rhetoric Escalates

WATCH: Trump threatened a 50% tariff on goods from the EU starting on June 1. Jonathan Ferro and Lisa Abramowicz report.Source: Bloomberg

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President Donald Trump dug in on his threat to impose a 50% tariff on the European Union and said a potential 25% charge on smartphones would apply to all foreign-made devices, in the latest escalation of a trade war that is rattling markets and confusing businesses.