Assuming that its radar has not been jammed / duped / EMPed and that the enemy is chivalrous enough not to send an overwhelming number of multi-Mach missiles.

Assuming that its radar has not been jammed / duped / EMPed and that the enemy is chivalrous enough not to send an overwhelming number of multi-Mach missiles. The Zumwalt DDG discarded CIWS in favour of missiles.