The Future of Nuclear Weapons

During the Cold War, we were used to basically having to deal with one peer competitor in the nuclear arena. Now we have China, which is quadrupling its nuclear arsenal over the next decade or so. We never really had to think about that before,. not just deterring one major power, but deterring two. And then add on to all of that, hypersonic weapons to travel far faster than we ever conceived up during the Cold War.