Jacob Weisberg talks to Clint Watts, the author of Messing with the Enemy: Surviving in a Social Media World of Hackers, Terrorists, Russians, and Fake News, about the question of cyberwar. What is it? What counts? Does the United States have a clear strategy around it? And what's some basic internet hygiene we all can practice for safe surfing?Plus, John Di Domenico returns with the weekend's tweets.Learn more about your ad choices. Visit megaphone.fm/adchoices