It is New York they want as an additional possible target, not Stuttgart...
Iran has submarines?
Were Iran to strike New York our response should be massive retaliation wiping out every human being (if there are any) in ancient Persia or present-day Iran. Their absolute destruction might prove salutary to other kooks, pukes and gooks with nukes who don't know that of a great powerwould mean annihilation of their pissant presence on the planet.