4 mounth lead time.
You want one that does alpha, beta and gamma, all three radiation types. Alpha is the least dangerous (unless ingested/inhaled) as it is the least penetrating. Beta is more energetic and gamma, well.
Western states are monitoring. For how long will they “tell the truth” is another subject.
Oh, yeah, might as well check out what’s on TV.
Plus if you where a parent would you engineer a plan to evict your own son from a family compound.