Israel has been threatening to bomb Iran every quarter since the 1990s. I think it started when they finally paid off the hundred million dollars they owed Iran for oil back in 1979.
So the fact about every Muslim nation, and even a few Muslim reps in the US House, hate Israel is because they're threatened by this tiny country? Would be nice if one day Islam stopped obsessing about .02% of the world's population, but then Jew hate is inherent to Islam.
Israel makes much of this "hate" and "existential threat".. Its the glue that holds them together and keeps Bibi in office.
Because it is a real threat. Have you missed the thousands of rockets fired at Israeli civilian areas? Jew hate is the glue that holds Islam together, such bigotry is even taught in US mosques and schools.
So your claim - Israel does not threaten to destroy Iran (and the general case - US does not threaten to destroy Iran) is not true.