[forgottenacc57]

It's such a silly question. No one is readu for a missile attack except the navy. And no one can prevent a missile attack despite all the bluster about missile defense systems, again, except the navy, and the only reason the navy can defend is because ships are such small targets compared to countries and cities, so navy defensive systems have a chance of hitting incoming missiles because there is some certainty about what they are aimed at. Even then I wouldn't give a ship much of a chance against multiple incoming missiles.

The only positive thing working for the target when it is a city is that ICBMs are likely to fail to hit and detonate precisely as intended.