Iran's hatred toward Israel primarily stems from ideological, political, and historical reasons since the 1979 Iranian Revolution. Iran's Islamic Republic adopted a strongly anti-Israel stance, viewing Israel as an illegitimate state and a Western imperialist foothold in the Middle East. The ruling ideology frames Israel as an occupier of Muslim lands, particularly Palestinian territories, and opposes its existence as a Jewish state. This hostility is institutionalized in Iran's foreign policy, rhetoric of its leaders (e.g., Ayatollah Khomeini calling Israel the "Little Satan"), and support for proxy groups like Hezbollah, Hamas, and Palestinian Islamic Jihad that oppose Israel militarily. Before the revolution, Iran and Israel had relatively good relations, but the revolution marked a drastic turn, cutting diplomatic ties and embracing opposition to Israel as central to Iran's identity and politics. Iran's regime consistently calls for the destruction of Israel, which it sees as a symbol of Western and especially American imperialism in the region. This ideological opposition is reinforced through military and proxy engagements, Israel-Iran regional rivalry, and Iran's nuclear ambitions perceived as a threat by Israel. In summary, Iran's hatred of Israel is driven by a combination of theological opposition, revolutionary ideology, geopolitical conflicts tied to Arab-Israeli issues, and proxy warfare in the broader Middle East.