Passage:
[Same as above]

Question: What is the core theme/message (मूल कथ्य) of this passage?

The text shifts towards the need for stopping tests and controlling weapons, mentioning "इसीलिए निःशस्त्रीकरण की योजनाएँ बन रही हैं" (That is why disarmament plans are being made). The ultimate focus is on bringing forward the idea of disarmament and avoiding mass destruction to establish peace.