President Donald Trump’s trade war will escalate this week, with another round of tariffs expected on allies and Chinese retaliatory duties on U.S. goods. Trump announced on Sunday that he would implement 25% tariffs on steel and aluminum imported into the United States,

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,

The president, who has threatened and delayed other tariffs, said he will announce the new measures Monday. Canada and Mexico are among the U.S.’s top steel suppliers.