CANBERRA – Trade negotiations between the United States and China have broken down because the US government says the Chinese were walking back their agreement on matters that had previously been addressed. US negotiators and President Donald Trump were furious, and on May 10, Trump more than doubled US tariffs on $200 billion worth of imports from China. The lead Chinese negotiator, Liu He, told reporters that, because a final agreement was not reached, revisions were not “walked back,” a line that the US side does not seem to buy. The Chinese government has now retaliated, announcing that it will raise tariffs on $60 billion worth of US goods