Israel might survive a nuclear exchange with Iran, but the survivors would envy those who perished.
The entire Middle East might be uninhabitable for at least one generation.
Flora, fauna, agricultural produce, and livestock, would be contaminated with radioactivity.
Fatal cancers would continue to emerge among the surviving human population.
Most, if not all electric powered devices would be knocked out by the electromagnetic waves produced during detonations.
Most of the land areas affected would be glazed over with green glass resulting from the heat generated.
There would be no medical care available to treat the large number of burn victims and other injuries.
The outside world would not be able to distinguish the "winner" from the "loser".