How many countries may now be thinking of arming themselves with nukes? Ukraine has certainly mentioned the topic, Iran could be next, the Saudi Arabia.
The irresponsibility of nuclear countries if putting the world at massive risk.
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Not at all. The technology is more than 60 years old and any country with a civil nuclear reactor has fissile material (you do not need Uranium, Plutonium, a by-product is there. A few countries including South Africa have had programmes in the past and despite getting on the bad side of the US, EU, Ruzzia...
Non-proliferation is a two way street.