Just remember that the Aotallah in Iran can be a fanatical Islamist
and could believe that a nuclear weapon used on Israel that killed
moslems would be OK as those moslems would instantly be in paradise.
Even an attack on the US and the certain US response on Iran would
mean that believers in Iran would be instantly in paradise.

The Islamic belief that the destruction of Israel and the US would be
to the advantage of Islam, then it is permissible.
Make no mistake this IS what they believe.