President Donald Trump’s 25% tariffs on steel and aluminum imports came into force Wednesday, triggering concern across export-reliant Asia and immediate reprisals from the European Union and Canada as the global trade war enters a rocky phase.

Trump's action to bulk up protections for American steel and aluminum producers restores effective tariffs of 25% on all imports of the metals and extends the duties to hundreds of downstream products,

The European Commission launched “ swift and proportionate countermeasures” on US imports, reimposing balancing measures from 2018 and 2020 and adding a new list of industrial and agricultural goods. The EU’s planned countermeasures will apply to American exports worth up to €26 billion, matching the economic scope of the US tariffs.

President Donald Trump imposed sweeping 25% tariffs on all steel and aluminum imported into the United States Wednesday, a policy aimed at leveling the playing field for US manufacturing but a move that threatens to drive up prices on a broad range of consumer and industrial goods for Americans.

Trump placed a 25% tariff on steel and aluminum imports. Here are the top countries that supply metals to the US.

U.S. tariffs on steel and aluminum imports are poised to escalate costs for the oilfield service companies behind North America's vast energy industry, as their operations rely heavily on these metals.

President Donald Trump officially increased tariffs on all steel and aluminum imports to 25% on Wednesday, promising that the taxes would help create U.S. factory jobs at a time when his seesawing tariff threats are jolting the stock market and raising fears of an economic slowdown.