The Regional Reverberations of the U.S. and Israeli Strikes on Iran | CSIS

Key Takeaways

• Iran launched missiles and drones at multiple Gulf civilian targets.
• Major Gulf airports closed, disrupting air traffic and trade routes.
• Strait of Hormuz blockage threatens oil shipments and price spikes.
• Proxy groups, including Hezbollah, remain largely inactive after strikes.
• GCC likely to deepen coordinated air defense and security cooperation.

Summary

CSIS analyst Mona Yacoubian warns that recent joint U.S.-Israeli strikes on Iran have triggered immediate Iranian missile and drone attacks across the Gulf, shutting airspace and threatening oil flows through the Strait of Hormuz. Iran’s retaliation targeted civilian infrastructure in Bahrain, Kuwait, Saudi Arabia, the UAE, Qatar and Oman, causing unprecedented airport closures. The analysis notes limited response from Iran’s regional proxies, including a muted Hezbollah, despite the death of Supreme Leader Khamenei. Longer‑term, the strikes could accelerate regime instability in Iran and spur GCC defense integration, reshaping the Middle‑East order.

Pulse Analysis

The March 2026 joint U.S.-Israeli strikes on Iran have reverberated far beyond the immediate battlefield. Within hours, Tehran unleashed a cascade of missile and drone attacks on civilian targets across Bahrain, Kuwait, Saudi Arabia, the United Arab Emirates, Qatar and Oman. The resulting damage forced the closure of the Gulf’s three major air hubs—Dubai, Abu Dhabi and Doha—creating an unprecedented disruption to regional air traffic and logistics. Simultaneously, Iran’s decision to block the Strait of Hormuz has rattled global oil markets, prompting price spikes and prompting shippers to seek alternative routes.

While the Iranian regime has demonstrated a willingness to inflict high‑cost retaliation, its proxy network has shown surprising restraint. Hezbollah, still reeling from a 2024 Israeli offensive, has remained muted, and the Houthis have only hinted at renewed Red Sea attacks. Analysts suggest that the death of Supreme Leader Ayatollah Khamenei could have sparked a proxy surge, yet strategic calculations appear to favor avoiding a full‑scale escalation that could invite further U.S. involvement. This restraint underscores a complex calculus where proxy groups weigh the benefits of aggression against the risk of provoking a broader coalition response.

Looking ahead, the strikes may catalyze a structural shift in Gulf security policy. The Gulf Cooperation Council is expected to accelerate plans for an integrated air‑defense system and deeper intelligence sharing, aiming to deter future Iranian coercion. At the same time, internal pressures within Iran raise the specter of regime collapse, which could spill over into neighboring states. Together, these dynamics signal a transitional "hinge moment" for the Middle East, where traditional power balances are being re‑examined and new security architectures are likely to emerge.