How a Potential Political Transition in Iran Could Affect the EU Eastern Neighbourhood: Implications for the South Caucasus and Ukraine

Author: Riad Mammadov

The recent escalation involving the United States and Israel and the exchange of military strikes with Iran has once again raised discussions about the possibility of a political transformation inside Iran and the country’s future political trajectory.
At present, the parties are primarily targeting military facilities and urban areas, while tensions have expanded geographically, including Iranian strikes on military facilities in Qatar and the United Arab Emirates. Both countries have publicly expressed concern over the growing regional instability.

This new phase of military escalation in the Middle East, directly connected to Iran, may not only influence the future of the region itself, but also have broader implications for the European Union’s Eastern neighbourhood, particularly for the South Caucasus and Ukraine.

This article analyses the potential impact of a political transition in Iran through three main dimensions: regional security dynamics, connectivity and economic corridors, and geopolitical competition in the EU’s neighbouring regions.

Iran is a strategically important actor for the Eastern neighbourhood for several reasons.

First, Iran represents a key transit and logistical hub connecting the Middle East, the South Caucasus and wider Eurasian transport networks.

Second, Iran constitutes an important factor in the regional balance of power.

Third, Iran provides a potential alternative connectivity route bypassing Russia and linking the South Caucasus, Turkey, Central Asia and the European Union.

Finally, Iran is an integral part of the region’s broader energy and infrastructure architecture.

A political transition towards a more open and internationally engaged Iran could positively influence the political environment in the South Caucasus and strengthen the region’s capacity to diversify its external partnerships. Such a development could also create new opportunities for regional economic and trade projects, potentially attracting significant foreign investment and contributing to economic growth inside Iran itself. A more stable and economically integrated Iran could generate positive spillover effects for the wider Eastern Partnership region.

Furthermore, a reduction of regional tensions in the Middle East following a political transition in Iran could contribute to the development of new supply chains and safer trade routes, thereby strengthening regional connectivity and economic resilience.

For Ukraine, such a transformation could also produce indirect positive effects. Iran currently maintains close political and security ties with Russia and has supported Moscow during the war against Ukraine. A shift in Iran’s foreign policy orientation following a political transition could weaken one of Russia’s key regional partnerships and alter broader geopolitical alignments relevant for Ukraine.

For the European Union and within the framework of the Eastern Partnership, a potential political transition in Iran would create both opportunities and strategic uncertainty. The EU should proactively reassess its neighbourhood and connectivity policies in order to better integrate the South Caucasus and Ukraine into emerging regional configurations and infrastructure networks.

While the outcome of the current developments in Iran remains uncertain, it is clear that any significant political transformation would have far-reaching consequences beyond the Middle East. For the EU’s Eastern neighbourhood, particularly for the South Caucasus and Ukraine, such a transformation could open new strategic, economic and security opportunities, provided it is approached through a coordinated and long-term policy framework.

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