This is the best summary I could come up with:

Nov 2 (Reuters) - President Vladimir Putin on Thursday signed a law withdrawing Russia's ratification of the global treaty banning nuclear weapons tests, a step condemned by the organisation which promotes adherence to the landmark arms control pact.

The move, though expected, is evidence of the deep chill between the United States and Russia, whose ties are at their lowest level since the 1962 Cuban missile crisis over the war in Ukraine and what Moscow casts as Washington's attempts to stymie the emergence of a new multipolar world order.

But some Western arms control experts are concerned that Russia may be inching towards a nuclear test to intimidate and evoke fear amid the Ukraine war.

Robert Floyd, head of the Comprehensive Nuclear-Test-Ban-Treaty Organization, whose job is to promote recognition of the treaty and build up its verification regime to ensure no nuclear tests go undetected, condemned Russia's step.

The treaty established a global network of observation posts that can detect the sound, shockwaves or radioactive fallout from a nuclear explosion.

It is part of a disturbing trend in recent years that has seen arms control pacts scrapped or suspended, he said last month on X.

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