Tensions between Taiwan and China continued as U.S. pushed through arms deal with Taiwan, and President Tsai raised concerns of Chinese activities. U.S. administration 21 Aug formally notified U.S. Congress it was moving ahead with $8bn sale of 66 F-16 fighter aircraft to Taiwan. In response, Chinese foreign ministry same day threatened imposing sanctions on U.S. companies involved in deal, claiming they “constitute severe interference” and “undermine China’s sovereignty and security interests”. Tsai 10 Aug warned of “Chinese infiltration in Taiwan” including fake news, after a Reuters report claimed Chinese authorities paid Taiwanese media groups for positive coverage. Tsai’s cabinet 15 Aug proposed to parliament over 8% increase in annual military spending, largest yearly increase since 2008. U.S. navy 23 Aug sailed amphibious ship through Taiwan Strait in fourth freedom of navigation operation in 2019. Chinese authorities 27-29 Aug prohibited ships from entering water near Taiwan off coast of China’s Zhejiang Province for 48 hours to hold military exercises; Taiwan defence ministry confirmed U.S. military plane 29 Aug flew over “median line” of strait.