The United States and China escalated their acrimonious trade war on Thursday, implementing punitive 25 percent tariffs on $16 billion worth of each other’s goods, even as mid-level officials from both sides resumed talks in Washington. The world’s two largest economies have now slapped tit-for-tat tariffs on a combined $100 billion of products since early July, with more in the pipeline, adding to risks to global economic growth. China’s Commerce Ministry said Washington was “remaining obstinate” by implementing the latest tariffs, which kicked-in on both sides as scheduled at 12:01 p.m. in Beijing (0401 GMT). “China resolutely opposes this, and will continue to take necessary countermeasures,” it said in a brief statement, adding that Beijing will file a complaint over the latest tariffs with the World Trade Organisation (WTO). President Donald Trump has threatened to put duties on almost all of the more than $500 billion […]