The danger is mostly for themselves. Bringing tiny amounts of dust with them is not a huge problem. However, having alpha emitters in your lung and intestines because you breathed, drank and ate in a contaminated environment is a death sentence.
Alpha emitters in your body will kill you. Dose pretty much does not change that, only the time frame. Particularly if the dose is lodged next to cells that divide very quickly, like those lining the lungs and intestines (which have to renew frequently because of their role as barriers protecting the organism from a whole lot of bad things).
“Dose makes the poison” sounds good and is a good rule of thumb in most cases, but 1) it is not absolute, and 2) some things have an unbelievably small lethal dose.
Or do you have any concrete information that the risk to then is actually higher from this than catching a bullet (or a mine) from the Ukrainian army or resistance?
Because there definitely are already a lot more dead Russians from the Ukrainians than from radiation sources they exposed themselves to a part of this invasion.
