[jgorham]

The interpretation of impending nuclear war is by no means without merit, I just think the song is deeper than that. More about how most people either can't or are unwilling to rationally analyze their value structure, which can lead to a global tragedy such as nuclear explosions. But beyond that single example it is also about personal tragedy where, even though a person really wants to do the right thing, because they don't understand what is right or even how to determine what is right they harm themselves and their community.

In any case, this interpretation makes "allowed" more likely, in my opinion.