The United States and China will keep using the internet and cyberspace against each other. A 2015 agreement stipulating that neither would engage in cyber espionage to steal trade secrets or intellectual property from the other has reduced but apparently not eliminated these practices. In November 2017, for example, the United States charged three Chinese hackers working at an internet security firm based in China with eight separate counts of conspiring to commit computer fraud and trade secret theft. As U.S. President Donald Trump's administration takes aim at China's economic and industrial strategies through tariffs and trade investigations, Beijing will use cyberspace to insulate itself from the United States....