The latest escalation in tensions between the U.S. and China has reduced the chances that both sides could reach a trade deal this year, a former American diplomat said on Monday. Negotiations between Washington and Beijing appeared to be progressing well until U.S. President Donald Trump shocked markets in May by hiking tariffs from 10% to 25% on $200 billion of Chinese goods. Talks subsequently broke down and had resumed last week before Trump again threatened to slap 10% tariffs on $300 billion of Chinese goods starting Sept. 1. Trump's latest actions are "a step away from a solution," said Frank Lavin, U.S. ambassador to Singapore from 2001 to 2005. He added that it's "unlikely" both sides would reach a deal by the end of this year. "This tariffs war has gone on for over a year, so you see a deterioration in environment, a deterioration in trust and communication," Lavin, who's now chief executive at business consultancy Export Now, told CNBC's "Street Signs." Export Now is a company founded by Lavin to help consumer brands expand in China

Since the trade war started last year, Washington has imposed 25% tariffs on $250 billion of U.S. imports from China. Beijing retaliated by slapping elevated levies on billions of dollars of American products that it buys. In recent months, however, tensions between the two economic giants went beyond trade and into areas such as technology and security. In particular, the U.S. placed Huawei on a blacklist which made it more difficult for the Chinese tech giant to do business with American companies.

US presidential election