President Donald Trump announced plans to instate 25% tariffs on all imports from the European Union, which he said would go into effect in the coming weeks. He justified the proposal by saying the EU was created to “screw the United States.”

The EU said it would respond with similar measures if the president’s tariffs come to fruition, but would avoid an “unnecessary” trade war otherwise. The EU is the third largest trading partner of the U.S.

Trump also raised the possibility of further delaying tariffs on Canada and Mexico, the U.S.’s leading trade partners, until April 2. A White House official clarified that the current March 4 deadline remains in effect, but the president would review the neighboring countries’ immigration policies in the upcoming days, which could influence his decisions regarding the tariffs.

 The 25% tariffs were initially passed in early February, but delayed after last-minute conferences with the countries’ respective leaders and widespread criticism that tariffs would hurt the U.S. economy as well as international markets.