8 Arrested Men Have Extremist Views; Entered U.S. At Southern Border

Intelligence officials sound the alarm to OutFront about the warning signs of imminent attacks. This as CNN learns more about the eight men with links to ISIS who entered the United States through the southern border. Plus, a CNN exclusive onboard a Russian warship off the coast of the United States that is capable of firing a hypersonic missile.  Learn more about your ad choices. Visit podcastchoices.com/adchoices