President Donald Trump further ripped into Canada as the U.S. trade war with the country escalates, trashing its leadership as the “worst” of all countries he’s dealt with.

While Trump’s insults against Canada are nothing new, his descriptor of Canadian leaders as the worst is a step up, especially given it puts the U.S.’s northern neighbor below Iran, whose fanatical leadership Trump has repeatedly derided as insane and murderous. He made the recent criticisms in a Sunday post on Truth Social.