The EU said Wednesday that it will impose counter-tariffs on $28 billion in U.S. goods to retaliate for 25% tariffs that Trump has imposed.

Donald Trump threatened on Wednesday to escalate a global trade war with further tariffs on European Union goods, as major U.S. trading partners said they would retaliate for trade barriers already erected by the U.

Canada announced new 25% tariffs on about C$30 billion ($20.8 billion) of US-made items after Donald Trump followed through on his threat of levies on imports of steel and aluminum in a bid to resuscitate America’s steel industry.