The motivation Iran has to be a threat to Israel is the lack of a fair solution to the Palestinian situation. If Israel and the Palestinians were to formulate a peace treaty acceptable to both, the wind for harming Israel would be taken out of the sails of not just Iran, but every Muslim State. So anyone who really wants a secure Israel needs to ask themselves how Can Israel and the Palestinians formulate a peace treaty that is fair to both sides.
27 injured in fire, explosion at former air raid shelter in Hamburg, Germany (DPA)
from the article: Ari Shavit's final countdown: Iran is here