The threat to Seoul is mobile artillery near the border. It doesn't even have to be cruise missiles on anything like that; Seoul is close enough to the border t

The threat to Seoul is mobile artillery near the border. It doesn't even have to be cruise missiles on anything like that; Seoul is close enough to the border that indiscriminate shelling at the city is probable Mobile artillery is a very difficult problem to remove all with one strike, because it is mobile for the precise reason that its difficult to know where they all are. That's why many nuclear missiles have been deployed on trucks, so that they can be stationed in remote areas and moved at a moments notice, similarly to submarines