2 countries with the best war technologies on earth must work together to have a war with embargod-country-for-decades. And those 2 counties are founder of Board of Peace.
But their goal is targeted and precise attacks, that effectively destroy targets based on specific, and high quality intelligence.
The other part is that defense against missiles is significantly harder and more expensive than sending missiles. Iran, while relatively poor, has dedicated a significant part of its economy for missile development and production.