Cui labels US trade war tack 'unjustified'

China's top envoy in Washington warned the Trump administration on Wednesday that trade "bullying" will backfire and argued that the United States' justification for a trade war is flawed.

"Does the US government genuinely believe that China would possibly yield to such unreasonable policy?" Chinese Ambassador Cui Tiankai wrote in an op-ed column published in USA Today, referring to the trade war initiated by the US.

The world's top two economies are embroiled in a dispute intensified by a fresh round of tariff threats from the US, following 25 percent duties it imposed on $34 billion worth of Chinese imports on July 6.