Just as certain you are about the 'wipe off' threat. Never has A'Jad said that he would kill all the Jews etc. He used Soviet Union in that 'wipe off' comments as an example of a 'regime' which went to the dustbin of history. But, of course, you have to parrot a different line to justify a war. We can't help each other here.
About those combatant groups, would you mind telling me the difference between Hamas's threats vs Israel's actual implementation? What Hamas (and most likely Likud and other right wing Israelis SAY) is actually being done by Israel on the ground: A slow genocide of the Palestinian statehood because of the criminal 'Settlement Enterprise'. So...just like the Jews in America feel they have to help Israel--a separate country--A'Jad thinks he has to help his Palestinian brothers.
IF Israel leaves the W. Bank and gives Palestinians a viable state then A'Jad will lose his steam. So long as Israel is an expansionist power--a power where many believe that the 'real Palestine' is in Jordan (implicit ethnic cleansing)--the mullah regime will, sadly, find an audience in and outside of Iran.