I think the Arabs on the
south coast of the Persian Gulf want Iran neutralized because of the fear of Iran dropping a nuke on one of the many major oil-processing facilities in Kuwait, Saudi Arabia, Bahrain, Qatar, the United Arab Emirates and Oman. Can you imagine the worldwide economic chaos if Iran nuked the world's largest oil facilities in Jubial and/or Dharhan in Saudi Arabia?
Iran nuking its Islamic neighbors is a bit far fetched, I believe. The rest of the civilized world would retaliate against Iran so severely that it could not withstand. But if they nuke Israel, Half the world would celebrate, and half of the other half would wring their hands and cry ALAS! and do nothing..........