U.S. President Donald Trump and Chinese President Xi Jinping on Saturday agreed not to impose new tariffs, Washington and Beijing said, but trade strains will be rekindled if the two countries fail to make concessions on contentious matters within 90 days.The United States agreed to put off levying additional tariffs and to leave the current rate on $200 billion of Chinese goods at 10%, not raising them as previously planned, after Jan. 1.The world's two biggest economies, meanwhile, agreed to talk about technology and intellectual property rights issues within 90 days, but "if at the end o…READ FULL ARTICLE