The shelling of Mauripol in Ukraine at the beginning of the current war was roughly equivalent to Hiroshima in explosive yield. It had a lot more destructive power though, since it was distributed across a huge amount of explosions, and blast damage falls approximately with the square of distance to center of explosion.

Mauripol in 2022 was not a place you wanted to be in. When a bomb falls on top of you, it makes no difference if it is small nuclear or large conventional, you very much die anyway.

I'm not trying to make war seem nice or sell the idea that the world is heading in a great direction, I'm trying to make the point that nuclear annihilation is less of a threat today than before.