WASHINGTON >> President Donald Trump openly challenged U.S. allies on Wednesday by increasing tariffs on all steel and aluminum imports to 25% as he vowed to take back wealth “stolen” by other countries, drawing quick retaliation from Europe and Canada.

The Republican president’s use of tariffs to extract concessions from other nations points toward a possibly destructive trade war and a stark change in America’s approach to global leadership. It also has destabilized the stock market and stoked anxiety about an economic downturn.

“The United States of America is going to take back a lot of what was stolen from it by other countries and, frankly, by incompetent U.S. leadership,” Trump told reporters on Wednesday. “We’re going to take back our wealth, and we’re going to take back a lot of the companies that left.”

Trump removed all exemptions from his 2018 tariffs on the metals, in addition to increasing the tariffs on aluminum from 10%. His moves, based off a February directive, are part of a broader effort to disrupt and transform global commerce.

He has separate tariffs on Canada, Mexico and China, with plans to also tax imports from the European Union, Brazil and South Korea by charging “reciprocal” rates starting on April 2.

The EU announced its own countermeasures on Wednesday. European Commission President Ursula von der Leyen said that as the United States was “applying tariffs worth 28 billion dollars, we are responding with countermeasures worth 26 billion euros,” or about $28 billion. Those measures, which cover not just steel and aluminum products but also textiles, home appliances and agricultural goods, are due to take effect on April 1.

U.S. Trade Representative Jamieson Greer responded by saying that the EU was punishing America instead of fixing what he viewed as excess capacity in steel and aluminum production.

“The EU’s punitive action completely disregards the national security imperatives of the United States — and indeed international security — and is yet another indicator that the EU’s trade and economic policies are out of step with reality,” he said in a statement.

Meeting on Wednesday with Ireland’s Taoiseach Micheál Martin, Trump said “of course” he wants to respond to EU’s retaliations and “of course” Ireland is taking advantage of the United States.

“The EU was set up in order to take advantage of the United States,” Trump said.

Last year, the United States ran a $87 billion trade imbalance with Ireland. That’s partially because of the tax structure created by Trump’s 2017 overhaul, which incentivized U.S. pharmaceutical companies to record their sales abroad, Brad Setser, a senior fellow at the Council of Foreign Relations, said on X.

Canada sees itself as locked in a trade war under the pretext that its center for fentanyl smuggling and that its natural resources and factories subtract from the U.S. economy instead of supporting it.

“This is going to be a day to day fight. This is now the second round of unjustified tariffs leveled against Canada,” said Mélanie Joly, Canada’s foreign affairs minister. “The latest excuse is national security despite the fact that Canada’s steel and aluminum adds to America’s security. All the while there is a threat of further and broader tariffs on April 2 still looming. The excuse for those tariffs shifts every day.”

Canada is the largest foreign supplier of steel and aluminum to the United States and plans to impose retaliatory tariffs of Canadian $29.8 billion ($20.7 billion) starting Thursday in response to the U.S. taxes on the metals.