U.S. President Trump has warned that he would get "tougher" on China in a second term if Beijing drags on its trade talks with the U.S.<br />His remarks come after Washington and Beijing imposed new tariffs on each other on Sunday.<br />In a Twitter post on Tuesday, Trump said the U.S. is "doing very well in our negotiations with China"<br />and played up the damage the U.S. tariffs are having on China.<br />But, he did not specify how he would get tougher with Beijing.<br />After Washington put tariffs on China on Sunday, Beijing filed a complaint at the World Trade Organization over the U.S. import duties,... which is its third time challenging Trump’s China-specific tariffs.<br />