From Allies to Adversaries: The Complex History of Iranian-Israeli Relations

Published on: Jun 17, 2025

The Seeds of Cooperation: Early Relations (1948-1979)

The relationship between Iran and Israel, a complex tapestry woven with threads of political expediency, shared interests, and ideological clashes, began surprisingly amicably. Despite lacking formal diplomatic recognition initially, Iran, under the Pahlavi dynasty, viewed Israel as a strategic non-Arab ally in a volatile region. This pragmatic alliance, born from shared concerns about Arab nationalism and Soviet influence, laid the groundwork for covert cooperation in various domains.

Following Israel's establishment in 1948, Iran quietly supported the nascent state. This early support manifested in allowing Jewish emigration to Israel, facilitating clandestine oil shipments, and engaging in intelligence sharing. The periphery doctrine, championed by Israeli Prime Minister David Ben-Gurion, aimed to forge alliances with non-Arab states in the Middle East, further solidifying the Iranian-Israeli connection.

The Shah's Perspective: Modernization and Geopolitical Strategy

Mohammad Reza Pahlavi, the Shah of Iran, pursued a policy of rapid modernization and Westernization. He saw Israel as a valuable partner in this endeavor, particularly in areas such as agriculture, technology, and military expertise. The Shah's pro-Western stance and secular outlook contrasted sharply with the rising tide of Arab nationalism, further cementing the alliance with Israel.

Iran became a crucial supplier of oil to Israel, ensuring the latter's energy security. In return, Israel provided Iran with agricultural technology, military training, and intelligence support, particularly concerning regional threats. This mutually beneficial arrangement flourished for three decades, fostering a deep, albeit discreet, partnership.

Key Areas of Cooperation During the Pahlavi Era:

  • Oil Trade: Iran provided Israel with a significant portion of its oil needs.
  • Intelligence Sharing: Mossad and SAVAK (Iranian intelligence agency) collaborated on regional security matters.
  • Military Assistance: Israel supplied Iran with military equipment and training.
  • Agricultural Technology: Israel assisted Iran in developing its agricultural sector.

The Islamic Revolution: A Turning Point (1979)

The Iranian Revolution of 1979 irrevocably altered the course of Iranian-Israeli relations. The overthrow of the Shah and the establishment of the Islamic Republic ushered in a new era of ideological hostility, transforming allies into adversaries almost overnight. Ayatollah Ruhollah Khomeini, the Supreme Leader of Iran, vehemently denounced Israel as an illegitimate entity and a proxy of Western imperialism.

Khomeini's revolutionary ideology, deeply rooted in Shiite Islam, rejected the secular nationalism of the Pahlavi era and embraced a pan-Islamic vision. This vision clashed directly with Israel's existence, which was perceived as an affront to Islamic principles and a symbol of Western domination in the Middle East. The new Iranian regime severed all diplomatic and economic ties with Israel, branding it the “Little Satan” and vowing to liberate Palestine.

The Shift in Ideology: From Pragmatism to Religious Extremism

The Islamic Revolution fundamentally shifted the paradigm of Iranian foreign policy. Pragmatism was replaced by religious fervor, and strategic alliances were redefined along ideological lines. The new regime prioritized the liberation of Palestine and the support of anti-Israeli movements, such as Hezbollah and Hamas. This ideological shift marked a complete reversal of Iran's previous policy towards Israel.

The Iranian leadership viewed Israel as an obstacle to its regional ambitions and a threat to its Islamic identity. Khomeini's fiery rhetoric and unwavering commitment to the Palestinian cause resonated with many in the Muslim world, further isolating Israel and solidifying Iran's role as a champion of anti-Zionism.

Immediate Consequences of the Revolution:

  • Severance of diplomatic and economic relations with Israel.
  • Recognition and support for Palestinian militant groups.
  • Anti-Israeli rhetoric and propaganda.
  • Expulsion of Israeli diplomats and closure of the Israeli embassy in Tehran.

Proxy Warfare and Regional Conflicts: The New Reality

Following the Islamic Revolution, Iranian-Israeli relations entered a new phase characterized by proxy warfare and regional conflicts. Iran began supporting and arming anti-Israeli groups, such as Hezbollah in Lebanon and Hamas in the Gaza Strip, using them as proxies to wage war against Israel. This strategy allowed Iran to project its power and influence in the region while avoiding direct military confrontation with Israel.

Hezbollah, backed by Iran, emerged as a formidable threat to Israel, launching numerous attacks across the Lebanese border. The 2006 Lebanon War was a direct consequence of Hezbollah's aggression and highlighted the dangers of Iranian proxy warfare. Hamas, supported by Iran, also intensified its attacks on Israel from the Gaza Strip, further escalating tensions between the two countries.

Iran's Support for Anti-Israeli Groups:

  • Hezbollah: Iran provides Hezbollah with funding, training, and weapons, transforming it into a powerful military force in Lebanon.
  • Hamas: Iran supports Hamas with financial aid and military assistance, enabling it to launch attacks against Israel from the Gaza Strip.
  • Palestinian Islamic Jihad (PIJ): Another Palestinian militant group receives support from Iran.

The Syrian Civil War: A Complex Battlefield

The Syrian Civil War, which began in 2011, further complicated the already tense relationship between Iran and Israel. Iran has provided crucial support to the Assad regime, while Israel has carried out numerous airstrikes against Iranian targets in Syria, aimed at preventing the transfer of advanced weaponry to Hezbollah. This conflict has turned Syria into a proxy battlefield where Iran and Israel are indirectly engaged in a military struggle.

Israel views Iran's presence in Syria as a direct threat to its national security and has vowed to prevent Iran from establishing a permanent military foothold in the country. The frequent Israeli airstrikes in Syria have further heightened tensions between Iran and Israel, increasing the risk of a direct military confrontation.

The Nuclear Standoff: A Potential Trigger for War

Iran's nuclear program has become a major source of contention between Iran and Israel, escalating tensions to unprecedented levels. Israel views Iran's pursuit of nuclear weapons as an existential threat and has repeatedly threatened to take military action to prevent Iran from acquiring them. The international community has imposed sanctions on Iran in an effort to curb its nuclear ambitions, but Iran insists that its program is for peaceful purposes.

The possibility of Israel launching a preemptive strike against Iran's nuclear facilities remains a real and present danger. Such an attack could trigger a wider regional conflict, with potentially catastrophic consequences. The nuclear standoff between Iran and Israel is one of the most pressing security challenges facing the Middle East today.

Key Concerns about Iran's Nuclear Program:

  • Acquisition of Nuclear Weapons: Israel fears that Iran is secretly seeking to develop nuclear weapons, which would pose an existential threat.
  • Destabilizing the Region: A nuclear-armed Iran could trigger a nuclear arms race in the Middle East, further destabilizing the region.
  • Support for Terrorism: Israel fears that Iran could provide nuclear weapons or technology to terrorist groups.

The JCPOA and its Aftermath

The Joint Comprehensive Plan of Action (JCPOA), also known as the Iran nuclear deal, was signed in 2015 between Iran and a group of world powers, including the United States, the United Kingdom, France, Germany, Russia, and China. The agreement aimed to limit Iran's nuclear program in exchange for sanctions relief. However, the United States withdrew from the JCPOA in 2018 under President Donald Trump, reimposing sanctions on Iran. This decision has further heightened tensions between Iran and Israel and increased the risk of a military confrontation. The current status of the JCPOA remains uncertain, with ongoing efforts to revive the agreement.

Cyber Warfare: A New Domain of Conflict

In recent years, cyber warfare has emerged as a new domain of conflict between Iran and Israel. Both countries have been accused of launching cyberattacks against each other's critical infrastructure, including government networks, energy facilities, and water systems. These cyberattacks are often attributed to state-sponsored hackers and are designed to cause disruption and damage.

The Stuxnet virus, which targeted Iran's nuclear facilities in 2010, is widely believed to have been a joint U.S.-Israeli operation. This cyberattack demonstrated the potential of cyber warfare to inflict significant damage on critical infrastructure. Iran has also been accused of launching cyberattacks against Israeli targets, including banks, hospitals, and media outlets. The ongoing cyber warfare between Iran and Israel is a growing concern, as it could escalate into a more serious conflict.

Examples of Cyberattacks:

  • Stuxnet: A computer worm that targeted Iran's nuclear facilities, reportedly developed by the United States and Israel.
  • Cyberattacks on Israeli water systems: Iran has been accused of attempting to hack into Israeli water systems to disrupt water supplies.
  • Cyberattacks on Iranian infrastructure: Israel has been accused of launching cyberattacks against Iranian infrastructure, including energy facilities.

The Future of Iranian-Israeli Relations: A Precarious Path

The future of Iranian-Israeli relations remains uncertain. The deep-seated ideological hostility, the proxy warfare in the region, and the nuclear standoff all contribute to a highly volatile and dangerous situation. While a direct military confrontation between Iran and Israel remains a possibility, both countries are likely to continue engaging in proxy warfare and cyber warfare to advance their interests.

Efforts to de-escalate tensions and find a peaceful resolution to the conflict have been largely unsuccessful. The lack of trust and the deep-seated animosity between the two countries make it difficult to find common ground. The international community needs to play a more active role in promoting dialogue and finding a way to prevent a further escalation of the conflict.

Possible Scenarios for the Future:

  • Continued Proxy Warfare: Iran and Israel continue to engage in proxy warfare through groups like Hezbollah and Hamas.
  • Cyber Warfare Escalation: Cyberattacks between the two countries become more frequent and sophisticated.
  • Direct Military Confrontation: Israel launches a preemptive strike against Iran's nuclear facilities.
  • Diplomatic Breakthrough: Efforts to revive the JCPOA succeed, leading to a reduction in tensions.

Conclusion: Understanding the Complexities

The relationship between Iran and Israel is a complex and multifaceted one, shaped by a confluence of factors, including political expediency, ideological clashes, and regional power dynamics. From their early alliance during the Pahlavi era to their current state of bitter rivalry, the relationship has undergone a dramatic transformation. Understanding the historical context, the ideological underpinnings, and the regional dynamics is crucial for comprehending the current state of affairs and the challenges that lie ahead.

The future of Iranian-Israeli relations will have a profound impact on the stability of the Middle East and the wider world. Finding a way to de-escalate tensions and promote dialogue is essential for preventing a further escalation of the conflict and ensuring a more peaceful future for the region.