President [PERSON_NAME] threatened on Monday to increase tariffs on all cars, trucks, car parts and steel from [ADDRESS] to 50 percent, starting Jan. 1, as the relationship with [ADDRESS]’s closest traditional ally edges toward a full-blown trade war. Writing on Truth Social, the president said that [ADDRESS] was “among the worst Nations in the World to deal with” and that it “will be treated like a State no longer.”“They feel entitled, and yet, WE DON’T NEED [ADDRESS], THEY NEED [ADDRESS]!” he wrote. Trade tensions between [ADDRESS] and [ADDRESS] have spiraled over the past few days, after the two sides failed to reach a trade deal and Mr. [PERSON_NAME] imposed 50 percent tariffs on $20 billion of the country’s exports on Saturday. Mr. [PERSON_NAME] had threatened those tariffs in a bid to speed trade talks and persuade [ADDRESS] to remove some of the retaliatory measures it had taken against yet other tariffs Mr. [PERSON_NAME] introduced last year.

But despite weeks of negotiations — and frequent reassurances from Mr. [PERSON_NAME] that a deal was close — the two sides announced late Friday that they had failed to come to terms. The new [ADDRESS] tariffs drew significant opposition, including in [ADDRESS], where congressional Democrats attacked the Trump administration — and even some Republicans — expressed alarm that the duties could cause domestic costs to rise. In [ADDRESS], Mr. [PERSON_NAME]’s actions provoked an immediate and defiant response.

On Saturday, [PERSON_NAME], the country’s prime minister, said the longtime allies were “at war” over trade, and promised to respond in kind with tariffs targeting [ADDRESS] agriculture, electronics, steel and other sectors.