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 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,

The European Commission said on Monday it would react to protect EU interests after U.S. President Donald Trump's announcement of impending metals tariffs, but will not respond until it has clarification of the measures.

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.

The unjustified tariffs on the EU would trigger firm and proportionate countermeasures, Ursula von der Leyen said in a statement.

Commission President Ursula von der Leyen said unjustified tariffs would prompt "proportionate and decisive countermeasures", echoing her vow on Tuesday of a "firm and proportionate" response to Trump's decision to impose tariffs on all steel and aluminum imports.

The European Union plans to safeguard its economic interests by imposing countermeasures in response to the U.S. tariffs, according to EU officials.

European Commission President Ursula von der Leyen said the bloc will respond if Donald Trump follows through on his threat to impose global reciprocal tariffs, calling them a “step in the wrong direction.

The economic chill from U.S. President Donald Trump’s threat of tariffs is being felt worldwide. U.S. President Donald Trump has repeatedly characterized the European Union (EU) as a bad trading partner.