Can someone give me the Original Sanskrit verse from Mahabharata or Gita describing Atomic weapons?
You probably read about that in Autobiography of a Yogi or something similar, right? There is no description of an atomic weapon, only a description of effects similar to one. Indian epic poetry is first and for most fiction, it was not meant for the readers to view literally. The point of the epic poetry was to make the reader “world weary”. They wanted the reader to see that the world was filled with violence and awful things. Krishna, although many philosophical parallels can be applied to his character, is not meant to be viewed positively. The reader is supposed do see the destruction that Krishna, the good guy, does and then reflect on the miserable state of the world. So necessarily the authors of the Mahabharata included scenes of terrible destruction to enhance the effect of world weariness (which apparently failed for most readers). Also if ancient Indians had Nuclear weapons why didn’t they use them on Alexander when he invaded?