President Trump on Tuesday claimed China wants to negotiate with the United States over escalating tariffs but can’t figure out how to begin the talks, while Beijing said it would not succumb to U.S. “blackmail” and promised to “fight to the end.” China last week announced it would impose 34 percent tariffs on U.S. goods in response to the Trump administration’s new tariff regime, which hit goods from the country with 34 percent tariffs on top of new 20 percent...