The European Union has vowed to take firm and proportionate countermeasures in response to U.S. President Donald Trump’s imposition of tariffs on all steel and aluminum imports.

The European Union’s executive branch has vowed to “take firm and immediate action” against U.S. President Donald Trump’s imposition of tariffs on steel and aluminum.

Donald Trump’s tariffs are a headache for all his trade partners. But the U.S. president’s plan to impose ad hoc “reciprocal” levies on imports are a particular problem for the European Union. By enabling him to target whichever countries in the bloc he pleases,

President Trump is going scorched earth on America's major European trading partners. Vowing to impose reciprocal tariffs on "every country" that hits U.S. products coming into their countries with import duties,

President Trump has been busy imposing tariffs this month—the initial Mexico and Canada tariffs that were later delayed, a reciprocal tariff affecting a majority of products and a 25% tariff on aluminum and steel.