We take a closer look at how European policymakers could react. Spoiler alert: it's complicated. The Trump hurricane continues. Anyone still second-guessing the US president’s determination to implement his election promises into actual policy has been proven wrong.

European Union Chief Ursula von der Leyen vowed Tuesday that U.S. tariffs on steel and aluminum "will not go unanswered."

The EU will act to safeguard its economic interests. We will protect our workers, businesses and consumers,” von der Leyen said in a statement in reaction to US President Trump’s imposition of tariffs on steel and aluminum the previous day.