At all times there are submarines just floating around out there in various oceans waiting to nuke someone with a ballistic missile. They can operate underwater

At all times there are submarines just floating around out there in various oceans waiting to nuke someone with a ballistic missile. They can operate underwater for 3 months without surfacing. Someone can get a call and press some buttons and just vaporize a town filled with people they have never met. I lie awake at night thinking about this a lot.