Iran already made it clear n times it will wipe Israel off the map. One going through news regularly would be aware of the Iranian threat of Israel's extermination. As long as Israel as a nation on the earth, its a question of credibility of the Islamic teachings and they would do anything possible to destroy Israel.
Judge orders Jerusalem Gay Pride attacker to undergo psychiatric evaluation (Haaretz)
from the article: Iran says united and 'ready for war' with Israel