Russia launched a new missile last week which is close to a nuclear weapon in its destructive power, but which is not a nuclear weapon.
This is what is being called a "game changer", but the US only knows one game, the Trash Talking, Posturing Bully Game, so it is incapable of responding in a rational manner. What else is new, amirite?
Scott Ritter talked about it on Judging Freedom, and I excerpted it here.