The Global War on Terror and the Rise of Iran

Context

1. The Global War on Terror, launched by the United States after the September 11, 2001 attacks, sought to dismantle terrorist networks and protect American strategic interests.
2. The interventions in Afghanistan (2001) and Iraq (2003), however, reshaped the regional balance of power in ways that benefited Iran.

Removal of Iran’s Strategic Rivals

Before 2001, Iran faced significant strategic pressure from two hostile neighbours.

1. The Taliban regime in Afghanistan and Saddam Hussein’s Iraq were major regional adversaries of Iran.
2. Their removal reduced the immediate security pressure on Tehran.
3. In Iraq, the fall of Saddam’s Baathist regime facilitated the emergence of a Shia-led political order with close links to Iran.
4. Tehran subsequently built influence through Iraqi political institutions, security structures and allied militias.

Sectarian Conflict and Proxy Warfare

1. Political instability in Afghanistan and Iraq weakened existing institutions and intensified Shia-Sunni tensions.
2. In Iraq, rivalry among Sunni insurgents, Shia militias and competing regional actors created space for external intervention.
3. Iran supported Shia groups, while Saudi Arabia and other regional actors backed rival Sunni forces.
4. Local conflicts consequently developed into wider proxy contests, allowing Iran to pursue strategic objectives through regional partners rather than direct confrontation.

Iran’s Role in the Fight against ISIS

1. The emergence of ISIS further strengthened Iran’s regional position.
2. Tehran supported the Iraqi government and assisted Shia militias through the Quds Force of the Islamic Revolutionary Guard Corps (IRGC).
3. Iran also became an important military actor in Iraq and Syria during the campaign against ISIS.
4. Although the United States and Iran shared an interest in defeating ISIS, their broader strategic rivalry prevented sustained cooperation.
5. The U.S. designation of Iran as part of the “Axis of Evil” in 2002 reflected the continuing hostility between the two countries.

The Axis of Resistance

Iran consolidated a network of political and armed partners across West Asia, commonly referred to as the Axis of Resistance.

1. The network extends across Iraq, Syria, Lebanon and Palestine.
2. Important groups associated with it include Hezbollah, Hamas, the Houthis and Shia militias in Iraq.
3. These partnerships allow Iran to pursue regional interests beyond its own territory.
4. They also provide Tehran with strategic depth, meaning greater capacity to withstand and respond to external pressure.

IRGC and Asymmetric Warfare

The Islamic Revolutionary Guard Corps (IRGC) is a key instrument of Iran’s regional strategy.

1. The Quds Force coordinates important overseas military and security relationships.
2. Iran combines military advisers, intelligence capabilities, missile systems and allied armed groups to project power.
3. This represents asymmetric warfare, in which a state uses indirect methods to offset the conventional military superiority of an adversary.
4. Such an approach enables Iran to extend its influence without relying exclusively on direct military confrontation.

Post-2011 Power Vacuums

1. The Arab Spring and the subsequent U.S. withdrawal from Iraq generated new political and security uncertainties from 2011 onwards.
2. Iran was well positioned to respond because it already had established regional networks.
3. In Iraq, Iran-linked forces became important participants in the campaign against ISIS.
4. In Syria, Tehran supported Bashar al-Assad’s government, preserving a key state partnership and its strategic connection with Hezbollah in Lebanon.
5. Prolonged American military engagements also absorbed considerable resources and attention, giving Iran greater room to consolidate its regional position.

Strategic Significance

Iran’s enhanced regional influence resulted from the interaction of several developments:

1. Elimination of major regional adversaries.
2. Weakening of political institutions in neighbouring states.
3. Expansion of political and military partnerships.
4. Use of asymmetric capabilities and proxy networks.
5. Increased involvement in conflicts in Iraq and Syria.

The wider lesson is that removing adversarial regimes without establishing durable political institutions can create power vacuums that are exploited by other regional actors.

Conclusion

The Global War on Terror transformed the strategic environment of West Asia beyond its immediate counter-terrorism objectives. Iran benefited from the disappearance of major adversaries, prolonged regional instability and the emergence of fragmented political orders.

The Iranian case shows that military intervention does not automatically produce favourable long-term geopolitical outcomes. Sustainable regional stability requires security measures to be accompanied by political reconstruction, institutional stability and effective governance.

FAQs

Q1. What is a proxy war?

A proxy war occurs when rival states pursue their strategic interests through local governments or armed groups instead of engaging in direct military confrontation.

Q2. Why was Iraq important to Iran’s regional rise?

The overthrow of Saddam Hussein removed a major Iranian adversary and created a political environment in which Tehran could develop strong relationships with Iraq’s new political and security actors.

Q3. What is meant by strategic depth?

Strategic depth refers to the ability of a state to use relationships, territory or allied actors beyond its own borders to create additional security buffers against external threats.

Q4. What is asymmetric warfare?

It is a strategy in which a relatively weaker actor uses indirect and unconventional methods such as proxies, intelligence, missiles and advisers to offset an opponent’s conventional military superiority.

Q5. Why is the Quds Force significant?

The Quds Force is the IRGC element responsible for important external military and security operations and for coordinating relationships with Iran’s regional partners.

Q6. How did Syria contribute to Iran’s regional position?

Iran’s support for the Assad government preserved a crucial state ally and helped maintain Tehran’s strategic links with Hezbollah in Lebanon.

Q7. What is the principal strategic lesson of the Global War on Terror?

The experience demonstrates that removing hostile regimes without ensuring political stability can produce unintended shifts in regional power, potentially strengthening actors that were not the original focus of intervention.