President Donald Trump’s 25% tariffs on steel and aluminum imports came into force Wednesday, triggering concern across export-reliant Asia and immediate reprisals from the European Union and Canada as the global trade war enters a rocky phase.

Canada and the European Union swiftly unveil retaliatory levies against the U.S., hours after Trump's sweeping tariffs on steel and aluminum.

The European Commission launched “ swift and proportionate countermeasures” on US imports, reimposing balancing measures from 2018 and 2020 and adding a new list of industrial and agricultural goods. The EU’s planned countermeasures will apply to American exports worth up to €26 billion, matching the economic scope of the US tariffs.