Ultimately, whether they use one big bomb, or a sequence of smaller bombs, the outcome is mostly the same. I have read or heard that many of the sites of nuclear tests or accidents (e.g. Chernobyl) have returned and thrived within a matter of decades, which I think would be unusual if the concern about deadly radiation levels for hundreds or thousands of years were the full story.
Yes that is true, it has to do with radio active half life.
But I have been to Hiroshima and have seen the evidence of what happened to the children and people, the museum artifacts did seem very real.
I think the problem is that it will not be just one or two bombs, it could start off an entire chain reaction of bombs and then it will be bad.
We know the elite have bunkers ready if they can get to them, unless that is all fake too.
It is really something these days!!