President Donald Trump signed an order Monday imposing global tariffs of 25% on all steel and aluminum imports, likely pleasing domestic steelmakers but hurting allies like Canada and Mexico.

The European Union plans to retaliate against the United States for new steel and aluminum tariffs, adding another element to rising global trade tensions. "Unjustified tariffs on the EU will not go unanswered—they will trigger firm and proportionate countermeasures,

Existing American tariffs already restrict steel and aluminum shipments from China, which is now flooding other markets with its exports instead.

European Commission President Ursula von der Leyen on Tuesday vowed "firm and proportionate countermeasures" in response to U.S. President Donald Trump's decision to impose tariffs on all steel and aluminium imports,

President Donald Trump’s desire to get even on countries by matching tariffs they have on American goods could come at a steep cost.

President Donald Trump has said he will announce a 25% import tax on all steel and aluminium entering the US, a move that will have the biggest impact in Canada. Trump also said that there would be an announcement later in the week about reciprocal tariffs on all countries that tax imports from the US,