The US and China engaged in tit-for-tat trade actions as bilateral trade talks failed to produce a compromise. The Trump administration doubled down on its characterization of China as a threat to US interests in the National Defense Strategy and “Worldwide Threats” hearings on Capitol Hill. President Trump signed the Taiwan Travel Act, which calls for the US government to encourage visits between officials from the United States and Taiwan at all levels, provoking China’s ire. Cracks in US-China cooperation on North Korea were revealed as the Trump administration imposed sanctions on Chinese shipping and trading companies allegedly conducting illicit business with North Korea, and Beijing failed to notify Washington in advance of Kim Jong Un’s visit to China. The US conducted two Freedom of Navigation Operations (FONOPS) in the South China Sea.下载链接：http://cifer.pbcsf.tsinghua.edu.cn/uploadfile/2018/0725/20180725085804502.pdf
