Partial Test Ban Treaty: Questions

Can the PTBT be interpreted as a document in support of optimism for the future? If so, how? Why might such a document be important for society at the height of the Cold War?
In what way is the rhetoric of the treaty used to both prohibit and permit various types of nuclear weapons testing?
Could the PTBT be revised to include biological weapons of mass destruction, or does that enter into entirely different moral territory? Why?
Why was it important to include an "exit" clause in the treaty? If nuclear war did break out, would anyone really be concerned about the stipulations of an international agreement?
What does it say about our values system concerning nuclear weapons that world powers could only agree upon a partial test ban, knowing full well how dangerous nuclear weapons are?
Are we still affected by the radioactive fallout from Castle Bravo and Tsar Bomba today?
What happens if a nuclear weapon accidentally explodes? Who is ethically responsible, and how can that be prevented?
Do you agree or disagree that North Korea's nuclear weapons program has jump-started a new type of Cold War situation?
Why can't we all just get along?
Will you ever sleep soundly again?
Who needs a break?