Donald Trump has escalated his dispute with Brussels by threatening the EU with further “substantial” tariffs over its fines on major US technology companies. The warning follows a new €890m fine against Google and could intensify transatlantic trade tensions by linking trade measures to European competition enforcement.

Trump said the US would immediately investigate what he described as Europe “robbing” American companies, naming Apple, Meta, Amazon and Google. The European Commission said Google had favoured its own services in search results, while Apple and Meta were fined last year; separately, the Trump administration has imposed a 10% tariff on EU imports within a wider package affecting more than 80 countries.