This missile system is used for defense of one's country only. It cannot be used in aggression. Why is Israel obsessed with it? Because if, and when, they attack Iran, they may not be as successful with the defense system in place. if they don't plan to attack Iran, they need not worry about it. Guesser is 100% correct..........no country is going to sit idly and watch their soil being attacked without retaliation or self-defense...NO country.
If Iran isn't building a nuclear weapon, why do they need this system?