Nuclear War, United States
Submarines are intended to ensure a massive “second strike” capability to ensure the destruction of anyone launching a nuclear attack upon the US.
Here's What You Need to Know: Former U.S. Air Force Chief of Staff David Goldfein mapped out what he would do if Russia attacked the US with a nuclear weapon.
Red lights start flashing in rapid succession, space-based infrared sensors detect a heat signature, somebody calls the President
Read this story at The National Interest