Washington: US President Donald Trump expressed optimism regarding the possibility of reaching an ambitious agreement with China to stop the ongoing trade war between the two nations, after a round of negotiations which brought “advances”. Trump received the Chinese Vice Premier, Liu He, at the White House on Thursday, two days after bilateral negotiations aimed at preventing the US raising its tariffs from the current 10 per cent to 25 per cent on Chinese products from March 1, Efe news reported. (IANS)