If you shoot it down at high altitude, wouldn't winds carry most of the radiation around the planet? Doesn't make it better for humanity but means the country (

If you shoot it down at high altitude, wouldn't winds carry most of the radiation around the planet? Doesn't make it better for humanity but means the country (esp if it's a small one) wouldn't be as affected. For the US, if a missile coming from the east is shot down over the Atlantic, radiation would probably hit Europe and Russia rather than the US.