We were in the second nuclear age, that of non-proliferation [1]. As the USSR weakened, MAD became unstable. Non-proliferation was the superpowers’ solution. The system sort of worked. It started coming apart between the second Iraq war and Ghadaffi’s toppling (showing the consequences of lacking nukes) and Russia’s invasion of Crimea (showing the power of having them).
With the benefit of hindsight, non-proliferation stemmed from the same misplaced optimism that led the U.S. to welcome China into the WTO.
> Who is sanctioning or trying to sanction russia to prevent russia from trading their products around the world?
Nobody is targeting Russian grain, which continues to trade [2].
[1] https://mondediplo.com/2022/04/03nuclear
[2] https://www.bloomberg.com/news/articles/2022-03-17/russian-g...