How Many Nuclear Weapons Exist and Who Has Them?

CNN's John Defterios looks at how many nuclear weapons exist and who has them. He says russia keeps a portion of their nuclear weapons on prompt alert, meaning they could be ready to launch in under 15 minutes. And the scariest thing to me is the hypersonic missile system that russia has been testing and recently deployed. These things travel at mach six, which is six times the speed of sound,. So it might be around mock five actually traveling. They allegedly have a range of a thousand kilometers, or 621 miles. But there's still, there's still more out there. There's more that you need to know about this.