The Iranian Nuclear Programme

[gaelic cowboy]

For a nuke yes.

I'm no expert, but I'd fire 100 missiles and have 95% with dummy / conventional warheads. Suddenly the odds of hitting the crucial ones looks a lot harder.

Absolutely correct hitting a missile with another missile is really hard and not fail safe you just stuff loads of dummy warheads in missiles and you increase the complexity probably beyond the system to cope.